Unifit MetalloysInc (UMI) is one of the leading Manufacturer, Exporter and Supplier of High Quality Stainless Steel Pipes & Tubes, Flanges, Pipe Fittings, Round Bars, Sheets and Plates Etc.Stainless steel is a corrosion resistant steel alloy with a minimum of 10% chromium. There are different grades and surface finishes of stainless steel produced to accommodate the environment in which the material will be implemented. Unlike carbon steel, stainless steel does not rust when exposed to air and moisture due to the sufficient amount of chromium present. The chromium creates an invisible passive film of chromium oxide that will not let oxygen attack the surface and prevents rusting of the iron base Ferritic Stainless Steels Chromium is their major alloying element Ductility and formability less than austenitic grades Magnetic Highly corrosion resistant, less durable than austenitic Cannot be hardened by heat treatment Contain between 10.5%27% chromium and very little nickel Common grades: part of the 400 series like 409, 410S, 430 Austenitic Stainless Steels Comprise of 70% of total stainless steel production Hardenable by cold working Usually nonmagnetic High hardness and yield strength Contain a maximum of 0.015% carbon, minimum of 16% chromium and sufficient nickel and/or manganese Superaustenitic stainless steels (AL6XN and 254 SMO) have great resistance to chloride pitting and crevice corrosion Common grades: 300 series like 304, 316, 320, 321, 347,309 Martensitic Stainless Steels Highly machinable Very strong and tough Can be hardened by heat treatment Magnetic Contains chromium (1214%), molybdenum (0.21%), nickel, (0 < 2%), carbon (0.1 < 1%) Common grades: 410, 420, 440 s : SS 304, 304L, 304H, 316, 316L, 316LN, 316Ti, 309, 310S, 317L, 321, 347,
409, 410, 420, 430, 446, 202, 904L, 174 PH, 155 PH, Duplex 31803/ 32205, Super Duplex 32750/32760 Specification : Pipes Specifications Sheets/Plates Specification Round bar Specification : ASTM A/ASME SA213/A249/A269/A312/ASTM A789/A790 : ASTM A240 / ASME SA240 : ASTM, ASME, AISI A 276, SA 276, A 479, SA 479 Buttweld and Forged : ASTM A182, ASME SA182/ ASTM A403, ASME SA403 Fittings Specification Flanges Specification : ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44 Fasteners Specification Dimensions : ASTM / ASME A/SA 193 / 194 : ASTM, ASME and API Size Range Available Pipes & Tubes : 1/2" NB 16" NB ERW Pipes & Tubes : 1/2" NB 24" NB EFW Pipes & Tubes : 6" NB 100" NB Sheets and Pates Round Bar Flanges Forged Fittings Buttweld Fittings Fasteners Schedule : 4.0mm 100mm : 3.17 MM TO 350 MM DIA : 1/2" NB TO 48" NB : 1/8" NB TO 4" NB. : 1/2" NB TO 48" NB. : M02 to M33 : SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120,
SCH140, SCH160, XXS Class : 2000 LBS, 3000 LBS, 6000 LBS, 9000 LBS, 150#, 300#, 400#, 600#, 900#, 1500# & 2500# Length End : Single Random, Double Random & Cut Length. : Plain End, Beveled End, Treaded Finish : Hot rolled plate (HR), Cold rolled sheet (CR), 2B, 2D, BA NO(8), SATIN (Met with Plastic Coated), Bright, Polish & Black Form : Round, Square, Rectangular, Hydraulic, Coils, Foils, Rolls, Plain Sheet, Shim Sheet, Perforated Sheet, Chequered Plate, Strip, Flats, Blank (Circle), Ring (Flange), Round, Square, Hex (A/F), Rectangle, Wire (Coil Form), Wiremesh, Billet, Ingot, Forging, Socketweld Fittings, Threaded Fittings, Specialized in : Large Diameter Pipes, Shim Sheet, Perforated Sheet, B. Q. Profile, Flanges, Pipe Fittings, Outlets Fasteners etc. Chemical Composition : C Mn Si P S Cr Mo Ni N 304 min. 18.0 8.0 max. 0.08 2.0 0.75 0.045 0.030 20.0 10.5 0.10 C Mn Si P S Cr Mo Ni N 304L min. 18.0 8.0 max. 0.030 2.0 0.75 0.045 0.030 20.0 12.0 0.10 C Mn Si P S Cr Mo Ni N 310 min. 24.0 max. 0.25 2.0 1.50 0.045 0.030 26.0 19.0
C Mn Si P S Cr Mo Ni N 310S min. 24.0 19.0 max. 0.08 2.00 1.50 0.045 0.030 26.0 22.0 C Mn Si P S Cr Mo Ni N 316 min. 16.0 2.00 10.0 max. 0.08 2.00 0.75 0.045 0.03 18.0 3.00 14.0 0.10 C Mn Si P S Cr Mo Ni N 316L min. 16.0 2.00 10.0 max. 0.08 2.00 0.75 0.045 0.03 18.0 3.00 14.0 0.10 C Mn Si P S Cr Mo Ni N 316TI Min 16.0 2.00 10.0 max 0.08 2 0.75 0.045 0.03 18.0 3.00 14.0 0.1 C Mn Si P S Cr Mo Ni N 317 0.08 max 2 max 1 max 0.040 max 0.03 max 18 20 3 4 11 14 C Mn Si P S Cr Mo Ni N 317L 0.035 max 2 max 1 max 0.040 max 0.03 max 18 20 3 4 11 15 C Mn Si P S Cr N Ni TI 321 Min 17.0 9.00 5(C+N)
max 0.08 2.00 1.00 0.045 0.030 19.0 0.10 12.00 0.70 max C Mn Si P S Cr N Ni TI Min 0.04 17.0 9.00 4(C+N) 321H max 0.08 2.00 0.75 0.045 0.030 19.0 0.10 12.00 0.70 max C Mn Si P S Cr N Ni OTHER 347 Min 17.0 9.00 Nb=10(C +N) max 0.08 2.00 1.00 0.045 0.030 20.0 13.00 1.0 C Mn Si P S Cr MO Ni N 410 Min 11.5 max 0.15 1.00 1.00 0.040 0.030 13.5 0.75 C Mn Si P S Cr MO Ni CU 904L Min 19.0 4.00 23.00 1.00 max 0.20 2.00 1.00 0.045 0.035 23.0 5.00 28.00 2.00 Mechanical properties Proof
304 515 205 40 92 201 Proof 304L 485 170 40 92 201 Proof 316 515 205 40% 95 217 Proof 316L 485 170 40% 95 217 Proof 310 515 205 40 95 217 Proof 310S 515 205 40 95 217
Proof 316H 515 205 35% 75 205 Proof 321 515 205 40% 95 217 Proof 321H 515 205 40% 95 217 Proof 347 515 205 40% 92 201 Yield Strength 0.2% Proof (HR B) (HB) 904L 490 220 35 7090 typical Rockwell value range is typical only; other values are specified limits.
Stainless Steel 317 Density Melting Point 8.0 g/cm3 1454 C (2650 F) Psi 75000, MPa 515 Yield Strength (0.2%Offset) Psi 30000, MPa 205 Elongation 35 % Stainless Steel 317L Density Melting Point 8.0 g/cm3 1454 C (2650 F) Psi 75000, MPa 515 Yield Strength (0.2%Offset) Psi 30000, MPa 205 Elongation 35 % specifications UNS No Old British Euronorm BS En No Name Swedish SS Japanese JIS 304 S30400 304S31 58E 1.4301 X5CrNi1810 2332 SUS 304 304L S30403 304S11 1.4306 X2CrNi1911 2352 SUS 304L 316 S31600 316S31 58H, 58J 1.4401 X5CrNiMo17122 2347 SUS 316 316L S31603 S31603 1.4404 X5CrNiMo17122 2348 SUS 316L 310 S310009 310S24 1.4840 X15CrNi2520 SUH 310 310S S31008 310S16 1.4845 X8CrNi2521 SUS 310S
321 S32100 321S31 58B, 58C 1.4541 X6CrNiTi1810 2337 SUS 321 321H S32109 321S51 1.4878 X6CrNiTi1810 SUS 321H 347 S34700 347s31 58G 1.4550 X6CrNiNb1810 2338 SUS 347 904L N08904 904S13 1.4539 X1NiCrMoCuN25 205 2562 410 S41000 410S21 56A 1.4006 X12Cr13 2302 SUS 410 SS 316TI 1.4571 S31635 SUS 316Ti Z6CNDT17 12 320S31 08Ch17N13M2T X6CrNiMoTi17 12