Sand Casting and Forging. Cast Steel and Copper Casting Alloys

Transcription

1 Sand Casting and Forging Cast Steel and Copper Casting Alloys

2 The ZOLLERN Group ZOLLERN is one of the pioneers of the metal industry. 3,000 employees at 14 production locations and seven subsidiaries in Europe, North and South America and Asia develop, manufacture and supervise a range of innovative metal products. ZOLLERN supplies sophisticated solutions for diverse applications through its business units drive technology, plain bearing technology, foundry technology, mechanical engineering elements and steel profiles. Contents Page Sand casting alloys 3 Cast steel for general use 4 Case-hardening steels 4, nitriding and spring steels 5 Heat-resisting cast steel 6 Stainless and acid-resistant steels, ferritic/austenitic 6 Stainless and acid-resistant steels, ferritic/martensitic 7 Stainless and acid-resistant cast steel, austenitic 8 Heat-resistant cast steel 9 Special materials, non-magnetisable 9 Tool steels 10 Copper-tin and copper-tin-zinc casting alloys 11 Copper-zinc casting alloys 11 Copper-zinc casting alloys 13 Copper casting materials 13 Copper-aluminium casting alloys (standardised) 14 Copper-aluminium casting alloys (non-standardised) 15

3 Sand casting - Superior quality casting 02 // 03 Sand casting Superior quality casting In Laucherthal, castings have been made from metallic materials since the founding of the company in Apart from iron and steel, a bronze foundry was added around The emphasis today is on sand castings made of copper and copper alloys as well as high and low alloy steels. For manually or machine formed parts, resin-bonded sands are used. This ensures a good surface, narrow tolerances as well as high-quality material. For special applications or requirements, we have the shell moulding process or utilisation of ceramic moulds and ceramic cores at our disposal. Castings from copper alloys are possible to a delivery weight of approximately 7,000 kg, from steel to approximately 2,000 kg. Equipped with highly modern CNC machines, our machining workshops pre-process or finish castings according to customer drawings. In the laboratory and materials inspection, all standard destructive and non-destructive tests and examinations are available. Production is certified according to DIN EN ISO 9001 : For us, quality and delivery reliability are the prerequisites for success on the national and international market.

4 Cast steel for general use Mechanical and technological characteristics 0.2% Proof stress Rp 0.2 Tensile elongation A 5 (%) Notchedbar impact work (ISO-V) (J) Annealing (HB) 38.3 GE DIN 1681 EN DIN 1681 GE 240 EN annealed annealed General mechanical engineering; good weldability; magnetically soft for pressure-bearing components in accordance with AD-W5 up to 300 C General mechanical engineering; magnetically soft, at least 1.70 T at 100 A/cm DIN 1681 annealed General mechanical engineering; magnetically soft, at least 1.70 T at 100 A/cm (GE 260) DIN 1681 GE 300 EN annealed General mechanical engineering; magnetically soft, at least 1.70 T at 100 A/cm Case-hardening steels Mechanical and technological characteristics 0.2% Proof stress Rp 0.2 Tensile elongation A 5 (%) Annealing (HB) C DIN DIN EN NiCr WL CrNi 6 18 CrNi DIN Case WL hardened WL Parts for general mechanical engineering with low core ; levers Components resistant to sudden stress, tough at subzero temperature; high core even with thick cross sections; pinion shafts, pins Parts subject to high stress with small wall thicknesses, inferior full hardening compared to 14 NiCr 14 Machine components subject to highest amounts of stress, better full hardening compared to 17 CrNiMo 6, therefore ly suited to larger parts 17 CrNiMo DIN DIN EN Machine components subject to highest amounts of stress very good wear resistance 15 Cr DIN DIN EN Machine components subject to average stress, higher core compared to C 15; roller bearings, measuring tool 17 Cr DIN DIN EN As 15 Cr 3, but slightly higher core ; parts used in the construction of vehicles 16 MnCr DIN DIN EN quality for components subject to average and higher stress with cross sections that are not too large; cog toothed wheels, control components 16 MnCrS DIN DIN EN As 16 MnCr 5; better and more uniform machining possible due to modified sulphur content 20 MnCr 5 DIN DIN EN As 16 MnCr 5, but suitable for larger cross sections or higher core s

5 Cast steel for general use / Case-hardening steels /, nitriding and spring steels 04 // 05, nitriding and spring steels Mechanical and technological characteristics 0.2% Proof stress Rp 0.2 Tensile elongation A 5 (%) Hardness/ Notched bar impact work (ISO-V) (J) Annealing (HB) C TL TL BWB C DIN EN EN C DIN EN EN Reinforced cast steel; for components with high -treated and toughness For components with small wall thickness and subject to low stress; mechanical engineering and apparatus construction For thin-walled components subject to slightly higher stress in mechanical engineering 36 CrNiMo 4 C DIN EN EN C DIN EN T1 - T2 CK DIN EN T1 - T CrNiMo DIN EN EN DIN EN T1 - T Castings of higher with small cross sections and subject to average stress For thin-walled castings of high For components of high with small cross section/higher degree of purity cast steel for components subject to high stress with good full quenching and subsequent drawing up to 50 mm wall thickness; parts subject to highest amounts of stress used in the construction of vehicles cast steel for large cross sections; full quenching and subsequent drawing up to 100 mm wall thickness possible; high toughness and elasticity 67 SiCr DIN EN T - T4 60 SiCr DIN EN ~ Castings subject to impact and bending stress with small cross section Highly quenched and components with high requirements in terms of spring characteristics 25 CrMo DIN QT J Parts used in mechanical engineering and G 26 CrMo EN QT J apparatus construction 34 CrMo DIN QT J High- quenched and cast G 34 CrMo EN QT J steel; wall thickness < 50 mm 42 CrMo DIN QT J Universal, high- quenched and cast steel with average requirements G 42 CrMo EN QT J in terms of toughness 42 CrMo S DIN EN T1 - T2 50 CrMo DIN EN T1 - T2 G 20 Mn EN CrMoV DIN CrV SEW CrV CrMoV DIN WL Equivalent to material ; good machinability due to modified sulphur content cast steel equivalent to ; however with higher N J with high toughness, 300 QT J also suitable for low temperatures Steel with good weldability even in quenched and ; nitriding steel for machine parts subject to wear Highly wear-resistant quenched and steel with good toughness characteristics Components with maximum wear resistance; also spring steel; cog toothed wheels, shafts Quenched & and nitriding steel for wear parts subject to high stress up to approx. 100 mm wall thickness

6 Heat-resisting cast steel Mechanical and technological characteristics Notchedbar impact work (ISO-V) Thermal expansion between 20 and 300 C 0.2% proof stress Tensile elongation 20 C 590 C A 5 (%) (J) α (10-6 K-1) G X 20 CrCoMoV C 25 DIN N GP 240 GH EN QT 40 G X 22 CrMoV 12 1 EN G X 23 CrMoV 12-1 EN G X 15 CrNiCo QT WL Cast ASTM A567 Or annealed 16 CrMo Heat-resisting castings resistant to pressurized hydrogen for the chemical industry; Rp 0.2 at least 340 MPa at 500 C 13.4 Fittings Turbine construction; components that are exposed to rapid temperature changes (temperature shock) Aeronautics; turbines/air blades, combustion chambers, valves; up to approx. 730 C; for further data, see supplement 1 to ; non-scaling up to approx. 980 C; high-temperature; stainless For castings up to max. 530 C application temperature can also be used as case-hardening steel 17 CrMo 55 EN QT G 17 CrMo 5-5 EN Turbine construction, pressure vessels, steam boiler construction 17 CrMoV EN QT G 17 CrMoV 5-10 Stainless and acid-resistant steels, ferritic/austenitic 0.2% Proof stress Rp 0.2 Tensile Mechanical and technological characteristics Notchedbar impact work (ISO-V) Thermal expansion between 20 and 300 C elongation A 5 (%) (J) α (10-6 K-1) G X 4 CrNi EN G X 2 CrNiMoN G X 2 CrNiMoN J J92205 G X 2 CrNiMoCuN G X 2 CrNiMoN EN EN ASTM A 995 SEW 400 EN ASTM A 995 EN and quenched and quenched and quenched and quenched Parts that require toughness with higher proof stress compared to austenitic steels with partially identical or better corrosion resistance, suitable filler material , pump housing For heavy exposure to corrosion, sea or brackish water, operating temperature up to 300 C Chemical and petro-chemical industry, high resistance to stress-crack corrosion in media containing chlorine; similar to Chemical and petro-chemical industry, flue gas desulfurization; resistant to non-oxidizing acids, e.g. sulphuric acid

7 Heat-resisting cast steel / Stainless, acid-resistant steels, ferritic/austenitic and ferritic/martensitic 06 // 07 Stainless and acid-resistant steels, ferritic/martensitic Mechanical and technological characteristics 0.2% Proof stress Rp 0.2 Tensile Notchedbar impact work (ISO-V) Annealing elongation A 5 (%) (J) (HB) G X 8 CrNi 13 DIN G X 7 CrNiMo 12-1 EN QT Resistant to humidity, water, steam; pump parts, running wheels, running wheel blades; suitable welding filler G X 20 Cr DIN SEW 410 Quenched and For parts that must be resistant to humidity, steam, water and frequent handling. Suitable welding filler X 46 Cr DIN Quenched and (55 HRC) Heat-treatable cast steel for cutting tools, measuring tools, wear parts G X 22 CrNi DIN SEW 410 Quenched and Corrosion-resistant, -treatable cast steel, e.g. for tow bars X 14 CrMoS DIN SEW 310 Quenched and As For castings that require elaborate, mechanical finishing. Welding not recommendable G X 35 CrMo DIN SEW 400 Annealed or quenched and Parts for optical devices, medical instruments and measuring devices G X 5 CrNi 13 4 G X 4 CrNi DIN QT EN QT QT Water turbines and pump parts, suitable filler material G X 5 CrNiMo SEW 410 EN Quenched and For parts with increased corrosion resistance compared to ; suitable welding filler /4 PH HRC 0.04C 16Cr 4Ni 3Cu WL G X 4 CrNiCuNb EN HRC HRC QT QT Precipitation-hardened, stainless cast steel of high ; aeronautical material

8 Stainless and acid-resistant cast steel, austenitic Mechanical and technological characteristics 0.2% Proof stress Rp 0.2 Tensile Notchedbar impact work (ISO-V) Annealing elongation A 5 (%) (J) (HB) X 8 CrNiS DIN EN and quenched As For castings with extensive mechanical machining, primarily thread cutting; welding not recommendable G X 2 CrNiN 18 9 SEW 410 X 2 CrNi EN G X 2 CrNi EN AT Fittings and parts for pumps, centrifuges, etc.; suitable welding filler , , ; food processing industry, dairies, beverage industry; similar to and 304 L G X 6 CrNi 18 9 G X 5 CrNi X 5 CrNi DIN EN AT Frequently used "V2A" quality; similar forging quality to and 304; fittings, pumps, food processing industry, dairies X 5 CrNiMo DIN and quenched Castings with identical corrosion resistance and forging quality, but lower ; as a casting material standardised under ; similar to 316 L G X 2 CrNiMoN SEW X 2 CrNiMo EN and quenched Castings for which resistance to intergranular corrosion is paramount. After welding, no renewed required; suitable welding filler , ; similar to and 316 L G X 2 CrNiMo EN and quenched Similar to 316 L; castings with increased resistance to intergranular corrosion after welding without further processing G X 6 CrNiMo DIN G X 5 CrNiMo EN AT Castings for the pulp, textile and chemical industry; fittings, pumps; suitable welding filler X 2 CrNiMoN DIN GX 2 CrNiMoN EN AT Good intergranular corrosion resistance, resistant in high chlorine concentrations and temperatures, good pitting resistance, chemical industry X 2 CrNiMo S31603 CF3M DIN MR 0175 ASTM A 743 and quenched in accordance with NACE MR Similar to , 316 L X 1 NiCrMoCuN ( 35) (80) and SEW 400 G X 1NiCrMoCuN quenched Good resistance to pitting and stress-crack corrosion; full austenite; especially suitable for use in sea water; similar to / G X 5 CrNiNb 18 9 DIN G X 5 CrNiNb EN AT Castings in the food processing, film, photo, paint, soap, paper, textile and saltpetre industries; suitable welding filler G X 5 CrNiMoNb DIN G X 5 CrNiMoNb EN AT As ; suitable welding filler

9 Stainless and acid-resistant cast steel, austenitic / Heat-resistant cast steel / Special materials, non-magnetisable 08 // 09 Heat-resistant cast steel Mechanical and technological characteristics 0.2% Proof stress Rp 0.2 Tensile Notchedbar impact work (ISO-V) Annealing elongation A 5 (%) (J) (HB) G X 40 CrSi DIN EN annealed For parts subject to minimal stress in industrial furnace construction up to 850 C G X 25 CrNiSi DIN EN Cast or annealed For parts subject to minimal stress in industrial furnace construction up to 900 C G X 15 CrNiSi SEW 595 Cast or annealed For parts in furnace and apparatus construction up to 1,100 C in oxidizing atmospheres G X 40 CrNiSi SEW 595 EN Cast or annealed G X 40 NiCrSi DIN EN Cast or annealed For parts in industrial furnace construction with high temperature fluctuation resistance Special materials, non-magnetisable Mechanical and technological characteristics 0.2% Proof stress Rp 0.2 Tensile Notchedbar impact work (ISO-V) Annealing elongation A 5 (%) (J) (HB) G X2 CrNiMoN SEW 395 WL and quenched Non-magnetic casting material (VG 81236); resistant to intergranular corrosion; can be welded G X12 CrNi SEW 395 WL and quenched Non-magnetic casting material (VG 81236), can be welded G X2 CrNiMnMoN Nb SEW 395 WL and quenched Non-magnetic casting material (VG 81236); very good corrosion resistance; ly resistant to intergranular corrosion; can be welded, subsequent not required

10 Tool steels Chemical composition (approximate values %) C Si Mn Cr Mo V W Properties (HRC) Annealing (HB) 100 Cr DIN EN ISO 4957 Hardened Wear-resistant tool steel, also for parts with high Hertzian contact stress, telescopic type ball bearing travellers, etc. G X 38 CrMoV DIN EN ISO 4957 Hardened High-temperature tool steel for all non-cutting functions; working N/mm 2 G X 40 CrMoV DIN EN ISO 4957 Hardened High-temperature and wear-resistant tool steel; working N/ mm 2 G X 100 CrMoV Hardened Cutting and punching tools for average material thicknesses, cutting dies G X 155 CrVMo DIN EN ISO 4957 Hardened Dimensionally stable, super-speed steel for higher toughness stress X 165 CrMoV Hardened Steel resistant to corrosion to a limited extent for plate, wire, punching and cutting tools. Tools for moulding ceramic shells 90 MnCrV DIN EN ISO 4957 Hardened Cutting and punching tool, small shear blades, higher toughness compared to , , , , yet slightly reduced wear resistance

11 Tool steels / Copper-tin and copper-tin-zinc casting alloys 10 // 11 Copper-tin and copper-tin-zinc casting alloys Zollern designation s Minimum values from the tensile specimen Min. R p0.2 N/mm 2 Rm A 5 N/mm 2 % HB 10/1000 RG 5 EN 1982 CC491K CuSn5Zn5Pb5-C DIN G-CuSn5ZnPb5 USA ~ C83600 UK LG2 F U-E5Pb5Z Thin-walled castings, water and steam fittings up to 225 C RG 6 EN 1982 CC492K CuSn7Zn2Pb3-C DIN G-CuZn6ZnNi UK ~ LG Suitable for pressure-tight parts due to additional Ni content fittings and pump housing up to 225 C RG 7 EN 1982 CC493K CuSn7Zn4Pb7-C DIN USA ~ C93200 F U-E7Z5Pb Through higher Pb content good emergency running properties, sliding strips, sliding plates slide bearing shells or bushings up to 4kN/cm 2 maximum load, unhardened steel as shaft is an option GBz 10 EN 1982 CC480K CuSn10-C DIN G-CuSn10 USA ~ C90700 GB CT Tin bronze with relatively high elongation fittings and pump housing guide, running and paddle wheels for pumps and water turbines GBz 12 EN 1982 CC483K CuSn12-C DIN G-CuSn12 USA ~ C90700 GB PB Good sliding properties and wear resistance, hinged blocks, hydraulic parts, sliding strips spindle nuts, cylinders for axial pistons GBz 12 Ni EN 1982 CC484K CuSn12Ni2-C DIN G-CuSn12Ni USA ~ C As GBz12, but higher wear resistance high-speed, low-noise transmissions subject to higher stress, in endurance runs up to 1.25 kn/ cm 2, over short periods also kn/cm 2, ly suitable for worm wheels through additional Ni content, but also for same applications as GBz 10 GBz 12 Pb EN 1982 CC482K CuSn11Pb2-C DIN G-CuSn12Pb Good emergency running properties through higher Pb content high wear resistance, for slide bearings subject to impact-type stress up to 12 kn/cm 2 crank and toggle bearings, highly stressed high-speed spindle nuts, sliding parts, sliding strips but not suitable for worm wheels mechanical properties pursuant to EN 1982 = sand casting (values also for shell-mould casting) = centrifugal casting Young's modulus ~ kn/mm 2 Electric conductivity ~ 5-8 MS/m Density ~ kg/dm 3 Thermal conductivity ~ W/cm.K Thermal expansion coefficient ~ /K Permeability < 1.01 µ r All alloys are resistant against drinking water, sea water, oils, soap solutions, milk

12 Copper-zinc casting alloys Zollern designation s Minimum values from the tensile specimen Min. R p0.2 N/mm 2 Rm A 5 N/mm 2 % HB 10/1000 BZG Non-standardised bearing casting material better sliding properties (Si, Pb) ~ CuZn37Mn2Al2Ni1SiPb-C composition similar to CW713R ~ 150 Preferred for sliding-stressed parts, up to 10 m/s sliding velocity, average compressive loads per unit area spindle and pressure nuts, bearing and guide bushings, bearing rings, worm wheel rims cast or produced from centrifugal casting PB EN 1982 CC765S CuZn35Mn2Al1Fe1-C DIN G-CuZn34Al1 USA ~ C86500 UK HTB Moderate sliding properties, tough pressure nuts for rolling mills and spindle presses with higher additional Ni content also for ship superstructures, on-board tableware, propeller hubs and blades ZB37 EN 1982 CC764S CuZn34Mn3Al2Fe-C DIN G-CuZn34Al2 USA ~ C86200 F U-Z36N Statically stressed construction parts, valve and control units, bevel only with good lubrication for bearing, guide rings, sliding blocks, pressure and adjustment nuts with low sliding velocities, low emergency running properties ZB 80 EN 1982 CC761S CuZn16Si4-C DIN 1709 G-CuZn15Si4 USA C Very good casting capability, good sea water resistance, low permeability < 1.01, suitable for pressure-tight, thin-walled parts such as sea water pump housings and fittings, water tanks, exchanger parts, also parts for mechanical engineering, the electronics industry and precision engineering ABG EN 1982 CC762S CuZn25Al5MN4Fe3-C DIN G-CuZn25Al5 USA ~ C86300 GB HTB3 F ~ U-Z19A Bearing material with high stress capability, only for low sliding velocities, moderate sliding properties, bearing bushings in construction machines, such as excavator arms, slow-running worm wheel rims, slide and guide rails mechanical properties pursuant to EN 1982 = sand casting (values also for shell-mould casting) = centrifugal casting Young's modulus ~ kn/mm 2 Electric conductivity ~ 3-8 MS/m Density ~ kg/dm 3 Thermal conductivity ~ 0.42 W/cm.K Thermal expansion coefficient ~ /K Permeability < 1.03 µ r

13 Copper-zinc casting alloys / copper-nickel casting alloys / copper casting materials 12 // 13 Copper-nickel casting alloys Zollern designation s Minimum values from the tensile specimen Min. R p0.2 N/mm 2 Rm A 5 N/mm 2 % HB 10/1000 GN 10 GN 30 EN 1982 CC380H CuNi10Fe1Mn1-C DIN G-CuNi10 USA C96200 F U-N10Fe1M EN 1982 CC383H CuNi30Fe1Mn1NbSi-C DIN G-CuNi30 USA C96400 F U-N30M1Fe Very good resistance against sea water, brackish water, chloride-containing wastewater, brine solutions for power plants, refineries, desalination plants, chemical industry, drilling platforms, petroleum production fittings, valve parts, oil and water cooling tanks mechanical properties pursuant to EN 1982 = sand casting (values also for shell-mould casting) = centrifugal casting Young's modulus ~ kn/mm 2 Electric conductivity ~ 2-6 MS/m Density ~ 8.9 kg/dm 3 Thermal conductivity ~ W/cm.K Thermal expansion coefficient ~ /K Permeability < 2 µ r Copper casting materials Zollern designation s Minimum values from the tensile specimen Min. WKG L45 CCG EN 1982 CC040A Cu-C, Type B DIN G-Cu L45 USA ~ C80100 UK HCC1 F ~ Cu/c1 EN 1982 CC140C CuCr1-C DIN G-CuCr F35 USA ~ C81500 UK CC!-WP F U-Cr0.8Zr R p0.2 N/mm 2 Rm A 5 N/mm 2 % HB 10/ Electric conductivity 45 MS/m thermal conductivity 3.09 W/cm.K parts with higher conductivity in electrical mechanical engineering, general mechanical engineering, smelting technology, power supply, contact parts, cooling elements Electric conductivity 45 MS/m thermal conductivity ~ 3.14 W/cm.K As WKG, but higher wear resistance also for welding guns, electrode holders, clamping jaws for resistance welding equipment mechanical properties pursuant to EN 1982 = sand casting (values also for shell-mould casting) Young's modulus ~ 100 kn/mm 2 Density ~ 8.9 kg/dm 3 Thermal expansion coefficient ~ /K Permeability < 1.01 µ r

14 Copper-aluminium casting alloys (standardised) Zollern designation s Minimum values from the tensile specimen Min. R p0.2 N/mm 2 Rm A 5 N/mm 2 % HB 10/1000 AB 9 EN 1982 CC330G CuAl9-C Low permeability < 1.01 also resistant against diluted sulphuric acid, castings for the chemical and food industry, such as screw conveyors, feed-in trays, mixing arms, pickling racks and hooks TUBG EN 1982 CC331G CuAl10Fe2-C DIN G-CuAl10Fe USA ~ C95200 UK AB1 F ~ U-A10Fe Low temperature dependency of the properties between -200 und +200 C, good corrosion resist. paddle wheels, pump wheels, fittings, bevel wheel sea water applications if Al < Ni (%) EBG 9 EBG VBG EN 1982 CC332G CuAl10Ni3Fe2-C DIN G-CuAl9Ni EN 1982 CC333G CuAl10Fe5Ni5-C DIN G-CuAl10Ni USA ~ C95500, ~ C95800 UK ~ AB2 F U-A10N EN 1982 CC334G CuAl11Fe6Ni6-C DIN G-CuAl11Ni USA ~ C Sea water resistant copper-aluminium bronze, no risk of stress-crack corrosion, as bearing material for parts subject to high stress and slower sliding velocities < 1 m/s good lubrication required good weldability, also with composite constructions, with increasing aluminium content greater wear-resistance and cavitation resistance, but also less elongation running wheels, pump housing and blades, ship propellers, ship superstructures, on-board tableware, turbine wheels, supered steam fittings, engine components, stirrers, pickling hooks, mixing arms for the chemical industry, exchangers, worm wheels, toggle bearings, sliding and pressure parts, wear parts EBG 9 - very good weldability MEBG WL G-CuAl9Ni EBG - most often implemented, very good combination of and toughness MEBG, AMB3 for special requirements in shipbuilding low permeability < 1.02 or < 1.05 AMB3 DIN G-CuAl8Mn VBG - highest wear resistance and stress capability mechanical properties pursuant to EN 1982 or WL and DIN = sand casting (values also for shell-mould casting) = centrifugal casting Young's modulus ~ kn/mm 2 Electric conductivity ~ 2-9 MS/m Density ~ kg/dm 3 Thermal conductivity ~ W/cm.K Thermal expansion coefficient ~ /K Permeability < 1.01 to < 1.9 µ r

15 Copper-aluminium casting alloys (standardised) / copper-aluminium casting alloys (non-standardised) 14 // 15 Copper-aluminium casting alloys (non-standardised) Zollern designation Notes Minimum values from the tensile specimen Min. R p0.2 N/mm 2 Rm A 5 N/mm 2 % HB 10/1000 TZB 28 TZB 32 TZB 36 Al content > 13% Tensile specimen frequently not possible only is guaranteed very brittle Deep drawing tools for reshaping of titanium, Hastelloy and austenitic steel, low friction coefficient, no welding profile and straightening rolls, bending tools SMBG Sliding material, similar to forged material For parts subject to sliding stress, oil lubrication required, worm wheels, sliding blocks, spindle nuts, guide rails, also suitable for refrigeration technology AMBG Sliding material, similar to forged material (CW306G) For parts subject to sliding stress, MoS lubrication required, worm wheels, sliding blocks, bushings, bearings subject to impact-type oscillating stresses also for higher temperatures such as roller conveyors of continuous casting plants, foundry machines mechanical properties pursuant to EN 1982 or WL and DIN = sand casting (values also for shell-mould casting) = centrifugal casting Young's modulus ~ kn/mm 2 Electric conductivity ~ 3-6 MS/m (SMBG, AMBG) Density ~ 7.6 kg/dm 3 TZB ~ 7.2 kg/dm 3 Thermal conductivity ~ 0.45 W/cm.K (SMBG, AMBG) Thermal expansion coefficient ~ /K (SMBG, AMBG) For sand and shell-mould casting, the mechanical properties are determined from separately or integrally cast specimen rods, with centrifugal casting (only copper alloys), directly from the casting, in doing so, the specified values apply only for wall thicknesses up to 50 mm. All information presented in this brochure was prepared with great diligence. Any warranty of quality or qualities is not connected therewith. Zollern does not assume any guarantee or liability. Applicable are the provisions stipulated in arrangements and/or provisions as agreed on in the individual contract or in the General Terms and Conditions.

16 ZOLLERN I I 081 I Errors and amendments excepted. Pictures and illustrations similar. Group headquarters Subsidiaries & local offices Plants ZOLLERN GmbH & Co. KG Hitzkofer Strasse Sigmaringendorf-Laucherthal Germany T F zgm@zollern.com IATF 16949