| Grade | US Aerospace/Military | US Commercial | British Specification | European Specification | Other |
| 321 321 Tube |
AMS 5510 Sheet / strip / plate AMS 5557 Welded/seamless tube AMS 5559 Welded / thin wall tube AMS 5570 Seamless tube AMS 5576 Welded tube AMS 5645 Bars / wire / forging MIL-S-6721 MIL-T-8606 Seamless tube MIL-T-8606 Welded tube MIL-T-8808 Seamless tube MIL-T-8808 Welded tube QQ-S-766 | ASTM A240 / ASME SA240 ASTM A167 / ASME SA167 ASTM A193 Grade B8T CL1 ASTM A276 / ASME SA276 ASTM A314 / ASME SA314 ASTM A320 Grade B8T ASTM A479 / ASME A479 ASTM A484 / ASME SA484 AISI 321 |
BS 2S129 BS T67 Tube BS S524 Sheet BS S526 Sheet BS 970; 321S31 EN58B |
Werkstoff 1.4541 Z10CnNb18-11 |
UNS S32100 |
| Chemical Composition Limits | |||||||||||
| Weight % | C | Si | Mn | P + S | Cr | Ni | Ti | N | Fe | Mo | |
| AMS 5510 Alloy 321 |
0.08 max | 0.25-1.00 | 2.0 max | 0.040P 0.030S |
17-19 | 9-12 | 0.7 max | 0.1 max | Bal | 0.75 | |
Type 321 is a chromium-nickel stainless steel and with the addition of titanium, type 321 is resistant to intergranular corrosion. Type 321's general corrosion is less than Type 302. Type 321 is used where resistance to intergranular corrosion is required and where the parts are subjected to sustained heating or cooling within the range of 800 to 1500ºF. Type 321 is commonly used in applications such as exhaust stacks, manifolds and ring collectors.
| Material | Condition | Tensile Strength (ksi) | Yield Strength (ksi) | % Elongation | Hardness HB |
| Alloy 321 AMS 5510 |
AMS 5510 Sheet (Sol Trtd) | 70-100 | 25 | 40 | - |
| Alloy 321 AMS 5645 |
AMS 5645 Bar (Sol Trtd) | - | - | - | 255 max |
Type 321 is available in Sheet, Strip, Plate, Bar (Round, Hex, Flat, Square), Tube and Forging Stock. 321 Foil (Shim) is available in various thicknesses. View stock list for further information. For all stock availability of contact Sales.
Specifications
AMS 5510 Sheet / strip / plate
AMS 5557 Welded/seamless tube
AMS 5559 Welded / thin wall tube
AMS 5570 Seamless tube
AMS 5576 Welded tube
AMS 5645 Bars / wire / forging
MIL-S-6721
MIL-T-8606 Seamless tube
MIL-T-8606 Welded tube
MIL-T-8808 Seamless tube
MIL-T-8808 Welded tube
QQ-S-766
ASTM A240 / ASME SA240
ASTM A167 / ASME SA167
ASTM A193 Grade B8T CL1
ASTM A276 / ASME SA276
ASTM A314 / ASME SA314
ASTM A320 Grade B8T
ASTM A479 / ASME A479
ASTM A484 / ASME SA484
AISI 321
BS 2S129
BS T67 Tube
BS S524 Sheet
BS S526 Sheet
BS 970; 321S31
EN58B
Werkstoff 1.4541
Z10CnNb18-11
UNS S32100
Harsh Steel export Stainless Steel 321 to below contries.
Harsh steel is a major stockist and Exporter of Stainless Steel 321 to many countries of the world such as Singapore, Brisbane, Sydney, Melbourne, Australia, Houston, TX, San Diego, San Francisco, Atlanta, USA, Brentford, United Kingdom, Phoenix, Ireland, New Zealand and Canada, Western Australia , Queensland, New South Wales, South Australia, Victoria, Australian Capital Territory, Tasmania, Northern Territory, Ontario, British Columbia, Yukon Territory, Alberta, Manitoba, Saskatchewan, New foundland, Prince Edward Island, New Brunswick, Nova Scotia, Eastern Cape, Gauteng, Kwazulu-Natal, Western Cape, England, Scotland, Wales, Northern Ireland, Lagos, Abuja Capital Territory, Vadodara, Mumbai, Chennai, New Delhi, Mahape, Gurgaon, Noida, Bangalore, Coimbatore, Cochin, Ash Sharqiyah, Ar Riyad, Makkah, Dhahran, Riyadh, Jiddah, Jeddah, Masqat, Kwazulu-Natal, Gauteng, Western Cape, Free State, Eastern Cape, Alberta, Saskatchewan, British Columbia, Newfoundland, New Brunswick, Manitoba, Ontario, Nova Scotia, Quebec, Calgary, Edmonton, Vancouver, Toronto, Birmingham, Brentford, Manchester, Bristol, Sheffield, Milton Keynes, London, Poplar, Edinburgh, Thames Ditton.