Alloy 303 is available in Bar (Round, Flats, Hexagon, Squares), Plate, Wire. For all stock availability of contact Sales.
| Grade | US Aerospace/Military | US Commercial | British Specification | European Specification |
| 303 303Sulf |
AMS 5635 303Pb Bar / forging AMS 5638 Bar / wire / forging AMS 5640 Type 1 303Sulf Bar AMS 5640 Type 2 303Se Bar AMS 5641 303Se Free machine Bar ASM 5738 Free mach, High yield str MIL-S-7720, MIL-W-52263 QQ-S-763, QQ-S-764 |
ASTM A320 Grade B8F Cl1 ASTM A320 Grade B8F Cl2 ASTM A484 / ASME SA484 ASTM A582 /ASME SA582 AISI 303 |
BS 970; 303S21 BS 970; 303S41 EN58AM |
Werkstoff 1.4305 X8CrNiS18-9 AFNOR Z10CNF18-09 |
| Chemical Composition Limits | |||||||||||
| Weight % | C | Mn | Si | P | S | Cr | Ni | Mo | Se | Cu | |
| Alloy 303 Se AMS 5640 Ty 2 |
0.15 max | 2 max | 1 max | 0.12-0.17 | 0.04 max | 17-18 | 8-10 | 1 max | 0.15 - 0.40 | 1.00 max | |
| Alloy 303 Sulf AMS 5640 Ty1 |
0.15 max | 2 max | 1 max | 0.15 max | 0.15 min | 17-19 | 8-10 | 1 max | - | 1 max | |
Type 303 is a free machining stainless steel. Due to the addition of sulfur this 18-8 chrome nickel stainless steel has enhanced machinability where before it was tough and difficult to machine. Type 303 is widely used in the screw machine industry, as well as for use in shafts, valves and fittings. Type 303 is not recommended for vessels containing gases or liquids under high pressure.
| Alloy | Ultimate Tensile Strength (ksi) | Yield Strength 0.2% (ksi) | Elongation 2" (%) | Reduction of Area (%) | Brinell Hardness |
| Type 303 | 90 | 35 | 50 | 55 | 160 |
| Typical Properties for 1" diameter round bar, annealed 1900°F | |||||
Specifications
AMS 5635 303Pb Bar / forging
AMS 5638 Bar / wire / forging
AMS 5640 Type 1 303Sulf Bar
AMS 5640 Type 2 303Se Bar
AMS 5641 303Se Free machine Bar
ASM 5738 Free mach, High yield str
MIL-S-7720
MIL-W-52263
QQ-S-763
QQ-S-764
ASTM A320 Grade B8F Cl1
ASTM A320 Grade B8F Cl2
ASTM A484 / ASME SA484
ASTM A582 /ASME SA582
AISI 303
BS 970; 303S21
BS 970; 303S41
EN58AM
Werkstoff 1.4305
X8CrNiS18-9
AFNOR Z10CNF18-09
Harsh Steel export Stainless Steel Alloy 303 to below countries.
Harsh steel is a major stockist and Exporter of Stainless Steel Alloy 303 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.