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 the transportation industry. The construction industry uses stainless steel for 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.

STAINLESS STEEL PRODUCTS

Stainless Steel Pipe

Stainless Steel Tube

Stainless Steel Sheet

Stainless Steel Round Bar

Stainless Steel Pipe Fittings

Stainless Steel Flanges

Stainless Steel Fasteners

Stainless Steel Wires

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 : It has 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

STAINLESS STEEL AVAILABLE GRADES

SS 303Inox 303DIN 1.4305UNS S30300 SUS 303
SS 304Inox 304DIN 1.4301UNS S30400SUS 304
SS 304LInox 304LDIN 1.4307UNS S30403SUS 304L
SS 304HInox 304HDIN 1.4948UNS S30409SUS 304H
SS 316Inox 316DIN 1.4401UNS S31600SUS 316
SS 316LInox 316LDIN 1.4404UNS S31603SUS 316L
SS 316HInox 316HDIN 1.4919UNS S31609SUS 316H
SS 316TiInox 316TiDIN 1.4571 UNS S31635 SUS 316Ti
SS 321Inox 321DIN 1.4541UNS S32100SUS 321
SS 321HInox 321HDIN 1.4878UNS S32109SUS 321H
SS 329Inox 329DIN 1.4460 UNS S32900SUS 329
SS 347Inox 347DIN 1.4550UNS S34700SUS 347
SS 347HInox 347HDIN 1.4961UNS S34709SUS 347H
SS 310 Inox 310DIN 1.4840UNS S31000SUS 310
SS 310SInox 310SDIN 1.4845UNS S31008SUS 310S
SS 317 Inox 317 DIN 1.4449UNS S31700SUS 317 
SS 317LInox 317LDIN 1.4438UNS S31703SUS 317L
SS 314Inox 314 DIN 1.4841UNS S31400SUS 314 
SS 410Inox 410DIN 1.4006UNS S41000SUS 410
SS 416 Inox 416DIN 1.4005UNS S41600SUS 416
SS 420Inox 420DIN 1.4021UNS S42000SUS 420
SS 430 Inox 430DIN 1.4016UNS S43000SUS 430
SS 430FInox 430DIN 1.4104UNS S43020SUS 430
SS 431Inox 431DIN 1.4057UNS S43100SUS 431
SS 440CInox 440CDIN 1.4125UNS S44004SUS 440C
SS 446Inox 446DIN 1.4762UNS S44600SUS 446
SS 422Inox 422DIN 1.4742UNS S44200SUS 422
SS 904LInox 904LDIN 1.4539UNS N08904SUS 904L
17-4PHDIN 1.4542UNS S17400SUS 630
15-5PHDIN 1.4545UNS S15500XM-12
13-8PHDIN 1.4534UNS S13800
Alloy A286DIN 1.4980UNS S66286
Alloy 660UNS S66286SUH 660
Nitronic 50DIN 1.3964UNS S20910XM-19
Nitronic 60UNS S21800Alloy 218 

STAINLESS STEEL APPLICATIONS

Martensitic stainless steels applications include cookware, cutlery, springs etc.

 

Austenitic steels are 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

GradeWNR No.Tensile Strength (MPa)
3041.4301540 - 750
304L1.4307520 - 700
3161.4401520 - 670
316L1.4404530 - 680

MARTENSITIC GRADES

GradeWNR SpecificationMax Thickness (mm)
4201.40313

FERRITIC GRADES

GradeWNR NumberTensile Strength (MPa)transverse Proof Strength 0.2% (MPa)Longitudinal Proof Strength 0.2% (MPa)
4091.4512380 - 560220210
4301.4016430 - 600280260
4391.451420 - 600240230
45091.4509430 - 630250230

STAINLESS STEEL COMPOSITION

AUSTENITIC GRADES

GradeWNR SpecificationManganese (Mn)Nickel (Ni)Carbon (C)Chromium (Cr)Silicon (S)Phosphorus (P)Sulfur (S)Molybdenum (Mo)Nitrogen (N)Iron (Fe)
2011.43725.5 - 7.53.5 - 5.50.1516.0 - 18.010.0450.015-0.05 - 0.25Balance
3011.43126.0 - 9.50.05 - 0.1516.0 - 19.020.0450.0150.80.1Balance
3161.4401210.0 - 13.00.0716.5 - 18.510.0450.0152.0 - 2.50.1Balance
316L1.4404210.0 - 13.00.0316.5 - 18.510.0450.0152.0 - 2.50.1Balance
3041.430128.0 - 10.50.0717.5 - 19.510.0450.015-0.1Balance
304L1.430728.0 - 10.50.0317.5 - 19.510.0450.015-0.1Balance

MARTENSITIC GRADES

GradeWerkstoff nrCarbon (C)Chromium (Cr)MnPhosphorus (P)SNiNitrogen (N)Sulfur (S)Iron (Fe)
4101.40060.08 - 0.1511.5 - 13.51.50.0410.75-0.015Bal.
4201.40210.16 - 0.2512.0 - 14.01.50.041--0.015Bal.
4201.40310.0717.5 - 19.520.04518.0 - 10.50.10.015Bal.

FERRITIC GRADES

GradeEN No.CarbonSiPSCrMnNiNbMoTi
(C)
4091.45120.0310.040.01510.5 - 12.51---[6 x (C + N)] to max 0.65
4301.40160.0810.040.01516.0 - 18.01----
4391.4510.0510.040.01516.0 - 18.01-(3 x C + 0.3) to max 1-[4 x (C + N) + 0.15] to max 0.8
4341.41130.0810.040.01516.0 - 18.01----
45091.45090.0310.040.01517.5 - 18.51---0.1 - 0.6
4361.45130.02510.040.01516.0 - 18.010.02-0.80 - 1.40[4 x (C + N) + 0.15] to max 0.8