Stainless Steel grades at a glance with ASTM specification and equivalent chart

Stainless steel application is very common nowadays in a host of industries and domestic appliances. Stainless steel is corrosion resistant to certain extent depending on the grade and standard of the steel which correspond to the material make and composition of the particular steel. All stainless steel materials contain chromium and carbon. The amounts vary depending on the grades. These two additions make the corrosion resistance and strength properties. Other elements are added in different grades to bring up the strength and the corrosion resistance properties. Molybdenum is an important addition in most compositions. Molybdenum plays a role in adding pitting corrosion attack resistance and resistance against reducing acids. Stainless steel flat products are seen in cookware, surgical instruments and in cutlery.  A lot of household items are made up of stainless steel. One most common usage is in the piping. There are pipes and pipe fittings that are made out of stainless steel. The pipes and fittings are used in both domestic applications as well as in industrial applications. The stainless steel industrial products range from pipes to cladding material to tanks and containers. The products are used in transportation industry. The construction industry uses stainless steel for the superior strength. There are different types of stainless steel. The different families of stainless steel are austenitic, ferritic, martensitic and duplex. The duplex steel has both the ferritic and austenitic steel properties. The grades of stainless steel vary with the composition of the material and the makeup procedures. There are hot rolled and annealed; hot rolled, annealed and passivated; cold rolled, annealed, pickled and passivated; bright annealed; brush finished and many other grades. The grades are numbered for universal identities. The stainless steel suppliers sell all kinds of stainless steel in different forms, shapes and sizes. You can contact us for a list of available stainless steel products and for the price inquiry.

Available Sectional Forms

Stainless Steel Grades

  • Austenitic stainless steel: 200 and 300 series
  • Ferritic stainless steels means 400 series (contain 10% to 30% chromium content)
  • Martensitic stainless steels : Its have 11 – 17% chromium with 0.15 – 0.63% carbon. 
  • Precipitation Hardening (PH) stainless steel: 17-7 PH® and PH 15-7 Mo®.
  • NITRONIC® 19D, duplex 2205, Super Duplex 2507

Available Grades

SS 201 Inox 201 DIN 1.4372 UNS S20100 SUS 201
SS 202 Inox 202 DIN 1.4373 UNS S20200 SUS 202
SS 303 Inox 303 DIN 1.4305 UNS S30300 SUS 303
SS 304 Inox 304 DIN 1.4301 UNS S30400 SUS 304
SS 304L Inox 304L DIN 1.4307 UNS S30403 SUS 304L
SS 304H Inox 304H DIN 1.4948 UNS S30409 SUS 304H
SS 316 Inox 316 DIN 1.4401 UNS S31600 SUS 316
SS 316L Inox 316L DIN 1.4404 UNS S31603 SUS 316L
SS 316H Inox 316H DIN 1.4919 UNS S31609 SUS 316H
SS 316Ti Inox 316Ti DIN 1.4571 UNS S31635 SUS 316Ti
SS 321 Inox 321 DIN 1.4541 UNS S32100 SUS 321
SS 321H Inox 321H DIN 1.4878 UNS S32109 SUS 321H
SS 329 Inox 329 DIN 1.4460 UNS S32900 SUS 329
SS 347 Inox 347 DIN 1.4550 UNS S34700 SUS 347
SS 347H Inox 347H DIN 1.4961 UNS S34709 SUS 347H
SS 310 Inox 310 DIN 1.4840 UNS S31000 SUS 310
SS 310S Inox 310S DIN 1.4845 UNS S31008 SUS 310S
SS 317 Inox 317 DIN 1.4449 UNS S31700 SUS 317
SS 317L Inox 317L DIN 1.4438 UNS S31703 SUS 317L
SS 314 Inox 314 DIN 1.4841 UNS S31400 SUS 314
SS 410 Inox 410 DIN 1.4006 UNS S41000 SUS 410
SS 416 Inox 416 DIN 1.4005 UNS S41600 SUS 416
SS 420 Inox 420 DIN 1.4021 UNS S42000 SUS 420
SS 430 Inox 430 DIN 1.4016 UNS S43000 SUS 430
SS 430F Inox 430 DIN 1.4104 UNS S43020 SUS 430
SS 431 Inox 431 DIN 1.4057 UNS S43100 SUS 431
SS 440C Inox 440C DIN 1.4125 UNS S44004 SUS 440C
SS 446 Inox 446 DIN 1.4762 UNS S44600 SUS 446
SS 422 Inox 422 DIN 1.4742 UNS S44200 SUS 422
SS 904L Inox 904L DIN 1.4539 UNS N08904 SUS 904L
17-4PH DIN 1.4542 UNS S17400 SUS 630
15-5PH DIN 1.4545 UNS S15500 XM-12
13-8PH DIN 1.4534 UNS S13800
Alloy A286 DIN 1.4980 UNS S66286
Alloy 660 UNS S66286 SUH 660
Nitronic 50 DIN 1.3964 UNS S20910 XM-19
Nitronic 60 UNS S21800 Alloy 218

Stainless Steel Applications

  • Martensitic stainless steels applications for the include cookwear, cutlery, springs etc.
  • Austenitics steels mainly used in automotive trim, cookware, processing equipment, food and beverage equipment, and a variety of industrial applications.
  • PH steels are in high demand by aerospace industries
  • Used in heat exchangers, boilers, pressure vessels and tanks in chemical and oil and gas industries

Stainless Steel Types

Stainless steel is usually divided into 5 types:

  • Ferritic
  • Austenitic
  • Martensitic
  • Duplex
  • Precipitation hardening (PH)

Stainless Steel Properties

Austenitic Grades

  Grade WNR No. Tensile Strength (MPa)
304 1.4301 540 – 750
304L 1.4307 520 – 700
316 1.4401 520 – 670
316L 1.4404 530 – 680

Ferritic Grades

Grade WNR Number Tensile Strength (MPa) transverse Proof Strength 0.2% (MPa) Longitudinal Proof Strength 0.2% (MPa)
409 1.4512 380 – 560 220 210
430 1.4016 430 – 600 280 260
439 1.4510 420 – 600 240 230
4509 1.4509 430 – 630 250 230

Martensitic Grades

Grade WNR Specification Max Thickness (mm)
420 1.4031 3.0

Stainless Steel Composition

Austenitic Grades

Grade WNR Specification Manganese (Mn) Nickel (Ni) Carbon (C) Chromium (Cr) Silicon (S) Phosphorus (P) Sulfur (S) Molybdenum (Mo) Nitrogen (N) Iron (Fe)
201 1.4372 5.5 – 7.5 3.5 – 5.5 0.15 16.0 – 18.0 1.00 0.045 0.015 0.05 – 0.25 Balance
301 1.4310 2.00 6.0 – 9.5 0.05 – 0.15 16.0 – 19.0 2.00 0.045 0.015 0.80 0.10 Balance
316 1.4401 2.00 10.0 – 13.0 0.07 16.5 – 18.5 1.00 0.045 0.015 2.0 – 2.5 0.1 Balance
316L 1.4404 2.00 10.0 – 13.0 0.03 16.5 – 18.5 1.00 0.045 0.015 2.0 – 2.5 0.1 Balance
304 1.4301 2.00 8.0 – 10.5 0.07 17.5 – 19.5 1.00 0.045 0.015 0.1 Balance
304L 1.4307 2.00 8.0 – 10.5 0.03 17.5 – 19.5 1.00 0.045 0.015 0.1 Balance

Ferritic Grades

Grade EN No. Carbon (C) Si P S Cr Mn Ni Nb Mo Ti
409 1.4512 0.030 1.00 0.040 0.015 10.5 – 12.5 1.00 [6 x (C + N)] to max 0.65
430 1.4016 0.080 1.00 0.040 0.015 16.0 – 18.0 1.00
439 1.4510 0.050 1.00 0.040 0.015 16.0 – 18.0 1.00 (3 x C + 0.3) to max 1 [4 x (C + N) + 0.15] to max 0.8
434 1.4113 0.080 1.00 0.040 0.015 16.0 – 18.0 1.00
4509 1.4509 0.030 1.00 0.040 0.015 17.5 – 18.5 1.00 0.1 – 0.6
436 1.4513 0.025 1.00 0.040 0.015 16.0 – 18.0 1.00 0.020 0.80 – 1.40 [4 x (C + N) + 0

Martensitic Grades

GradeWerkstoff nrCarbon (C)Chromium (Cr)MnPhosphorus (P)SNiNitrogen (N)Sulfur (S)Iron (Fe)
4101.40060.08 – 0.1511.5 – 13.51.500.0401.000.750.015Bal.
4201.40210.16 – 0.2512.0 – 14.01.500.0401.000.015Bal.
4201.40310.0717.5 – 19.52.000.0451.008.0 – 10.50.10.015Bal.

We at RMT produce high quality Steel Pipes and tubes at best price, choose the pipes in your required sizes. We accept all large and small orders happily. You can contact us for ready stock and sizes, for urgent deliveries please mail to info@rmtindustry.com. We stock wide range of steel pipes, tubes, sheets, plates, round bars, rods, flat products, pipe fittings -buttweld / forged, fasteners in all materials and shapes for industrial purpose. We supply these piping product globally along with mill and test certificates. We supply these piping material in stainless steel, carbon steel, alloy steel, aluminium, copper and copper nickel and special steel grades, visit our Alloys section for detailed information. We also deal in hard to find materials.

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RMT has diversified into multi-product group deals in allm form of sections in Stainless, Carbon, Tool, Die, Alloy Steels and Non-Ferrous and Pure Metals, Piping Solution, pipe Fittings, Flanges, Coils, Sheets, Strips and more in Wide Range of Sizes.

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Mon - Fri 9:00 Am- 7:00 PM IST Sunday 9:00 Am to 7:00 PM IST

RMT has diversified into multi-product group deals in allm form of sections in Stainless, Carbon, Tool, Die, Alloy Steels and Non-Ferrous and Pure Metals, Piping Solution, pipe Fittings, Flanges, Coils, Sheets, Strips and more in Wide Range of Sizes.

GET IN TOUCH

4/5/6, Pearl Park, Chinchola Road, opposite to A.K. Tools, Near XLO Point, Ambad-Link Road, Ambad, Nashik - 422010.

+91 9890874482

+91 9890874482

info@rmtindustry.com

Mon - Fri 9:00 Am- 7:00 PM IST Sunday 9:00 Am to 7:00 PM IST