Physical Specification Of Commonly Cast Heat Resistant Alloys

Size: px

Start display at page:

Download "Physical Specification Of Commonly Cast Heat Resistant Alloys"

Miles Parsons
5 years ago
Views:

1 Physical Specificatin Of Cmmnly Cast Heat Resistant Allys Clsest Equivalent Ally IS 4522 Clsest DIN ASTM Gr Micr- Structure Heat Treatment T.S. Kg/mm2 min. Y.S. Kg/mm2 min. Elng-actin min.% Applicatins HA Ferrite Gd xidatin resistance upt 650 Used in il refining industry. 28/4 - - HC - As Cast Gd sulphur and xidatin resistance upt Minimal lad bearing capacity. 5/28 9/ HD Ferrite+ 6 - HE Ferrite Can be used in high sulphur applicatin (avid at C) upt Mre ductile and higher crrsin resistance (avid at 815 C) upt 1050 C fr high S atmsphere. 9/ HF As Cast Suitable fr applicatins requiring high strength & crrsin resistance at 650 C t HH As Cast Suitable fr applicatins between

2 0 0 12/ C and 1093 Nt t be used frm 7500C t 8900C and fr peratins invlving thermal shck & carburizing cnditins. 12/ HH Type2 Fully As Cast Same as HH but with superir creep resistance and reduced ductility. Used frm 650 C t 1000 C under cnstant temperature cnditins. 15/28 20/25 20/ HI Higher crrsin resistance and higher strength at temperature upt 1050C (avid 815C) HK As Cast Suitable fr stressed parts wrking upt 1100C such as billet skids, heat treating trays & fixtures. Unsuited at 815C and in peratins invlving thermal shcks HK40 As Cast Same as HK but with better creep strength. AISI Slutin Annealed Same as HK but Si increased fr greater resistance t carburizatin. HKNb - - HK40 Nb /24 Nb IN519 As Cast Same as HK 40 but with enhanced high temperature resistance upt /20 25/ HL Higher crrsin resistance and higher strength at temperature upt 1100 C (avid 815C). - HN As Cast Suitable fr applicatins upt 1100 C fr furnace parts such as grates,

3 32/20 Nb Castally 800H etc. with increased ductility. As Cast Suitable fr maniflds and headers. Service limit upt 980 C with increased ductility. 35/ HP As Cast Resistant t bth xidizing and carburizing atmspheres at high temperatures upt /25 Nb HP mdified As Cast Same as HP but with enhanced high temperature resistance upt 1100 Suitable fr refrmer ethylene furnace tubes, radiant tubes, etc. HP-M As Cast / HT As Cast Suitable fr highly stressed parts upt 1095 C including fr carburizing peratin. High sulphur gases and thermal shcks are detrimental. 39/ HU As Cast Suitable fr applicatins upt 1095 C including fr carburizing peratins. Can withstand crrsive applicatins with rapid thermal cycles. 45/30 Nbw As Cast Useful fr cmpnents perating in ht zne f pyrlysis cils and cmpnents f Refrmer utlet manifld service limit 1150 C 22H As Cast Same as HP but with enhanced high temperature resistance upt 1150 Suitable fr radiant tubes, air injectin tubes, refrmer tubes and fittings fr petrchemical furnaces, tube sheets, tube

4 supprts, etc. Super 22H As Cast Same as 22H but with enhanced high temperature resistance upt / HW Excellent thermal shck resistance and resistance t carburisatin up t 1040 C where sulphur is nt present. 66/ HX As Cast Fr severe service applicatins upt 1150 C where crrsin resistance is required. Canally Bushes & sleeves fr ht dip galvanizing line. Canally Cntrlled Manganese Bushes & sleeves fr ht dip galvanizing line. UMCO Furnace parts in heat-treating furnaces, slag ntch rings and tundishes. Cbalt Ally 6 Cbalt Ally 12 Cbalt Ally Special - R Wear plates and bars, bushes & sleeves fr peratin in ht & crrsive atmsphere, where lubricatin is impssible, with superir perfrmance. - R Cutting tls and bushes & sleeves peratin in ht & crrsive atmsphere, where lubricatin is impssible, with superir perfrmance Fr better sliding wear prperty. Hardness is between 375 t 432 HRB.

5 40 Ni 60 CrNb 50 Ni 50 CrNb 60 Ni 40 CrNb CY-40 (70Ni15Cr) R ASTM 40/60 Nb ASTM 50/50 Nb - - ASTM 60/40 Nb - - ASTM A494 Gr CY As Cast Suitable fr applicatins upt 950 C in furnace parts. Can withstand fuel ash crrsin. Gd creep strength and gd resistance t xidatin and carburizatin. - As Cast Fr heat resisting and elevated temperature crrsin resistance applicatin such as tube hangers. As Cast Frequently used fr elevated temperature fittings in cnjunctin with Incnel. Suitable fr biler feed water plants and where high strength, high resistance t wear, crrsin and xidatin at elevated temperatures is required.

Chemical Specification Of Commonly Cast Heat Resistant Alloys

Chemical Specification Of Commonly Cast Heat Resistant Alloys hemical Specificatin Of mmnly ast Heat Resistant Allys lsest Equivalent Ally IS 4522 lsest DIN 17445 ASTM - A297 Gr % Ni % r % M % Si % Mn% thers % Applicatins - - - HA 0.20-8.00-10.00 0.90-1.20 0.35-0.65