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Credibility ,Yaang Stainless inventory includes 303 grade stainless steel (UNS S30300) in Flanges, Pipe Fittings, Pipe.
Alloy 303 is a non-magnetic, austenitic stainless steel that is not hardenable by heat treatment. It is the free machining modification of the basic 18% chromium / 8% nickel stainless steel. Alloy 303 was specially designed to exhibit improved machinability while maintaining good mechanical and corrosion resistant properties Due to the presence of sulfur in the steel composition, Alloy 303 is the most readily machineable austenitic stainless steel; however, the sulfur addition does lower Alloy 303’s corrosion resistance to below that of Alloy 304. Like other austenitic grades, Alloy 303 demonstrates excellent toughness, although the sulfur does reduce this a little as well.
Alloy 303 is frequently used in applications that require parts to be heavily machined. Some examples include:
ASTM/ASME ……………. UNS S30300
EURONORM ……………. FeMi35Cr20Cu4Mo2
DIN ………………………… 2.4660
% | Cr | Ni | C | Si | Mn | P | S | Mo | Fe |
---|---|---|---|---|---|---|---|---|---|
303 | min: 17.0 max:19.0 |
min: 8.0 max: 10.0 |
0.15 max |
1.00 max |
2.0 max |
0.20 max |
0.15 min |
0.75 | balance |
Grade | Tensile Strength ksi (min.) |
Yield Strength 0.2% Offset ksi (min.) |
Elongation - % in 50 mm (min.) |
Hardness (Brinell) MAX |
Hardness (Rockwell B) MAX |
---|---|---|---|---|---|
303 | 75 | 30 | 35 | 228 |
Denstiy lbm/in3 |
Coefficient of Thermal Expansion (min/in)-°F |
Electrical Resistivity mW-in | Thermal Conductivity BTU/hr-ft-°F | Melting Range |
|||||||
---|---|---|---|---|---|---|---|---|---|---|---|
at 68 °F | at 68 – 212°F | at 68 – 932°F | at 68 – 1450°F | at 68°F | at 212°F | at 392°F | at 752°F | at 1112°F | at 1472°F | at 68 – 212°F | |
0.29 | 9.2 | 10.4 | 10.9 | 28.3 | 30.7 | 33.8 | 39.4 | 43.7 | 47.6 | 113.2 | 2552°F |
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Yaang Pipe Industry Co., Ltd. is an international supplier of piping solutions for flange, butt welding fittings, socket welding fittings and threaded fittings. Our products are widely used in different industrial fields, including oil and gas, chemical industry, petrochemical industry, power plant, pulp and paper industry, environmental and water conservancy engineering, engineering projects, etc.