Chemical composition C鈮?.035, Si鈮?.00, Cr: 18.00-20.00, Mn鈮?.00, Ni: 8.00-11.00, P鈮?.045, S鈮?.030 Mechanical properties Tensile strength Rm Mpa: 480 Yield strength Rp0.2 Mpa: 175 Elongation A%: 35% 304L is an ultra-low carbon austenitic stainless steel developed to solve the serious intergranular corrosion tendency of 304 material caused by Cr23 and C6 precipitation. Its sensitized intergranular corrosion resistance is significantly better than that of 304, and its other properties are the same as 304 except for slightly lower strength. All kinds of stainless steel welding process can be used for welding, and heat treatment is not required after welding. As a Low-C 304 steel, its corrosion resistance is similar to that of 304 steel in general state, but it has excellent resistance to grain boundary corrosion after welding or stress relief; it can also maintain good corrosion resistance without heat treatment, and the service temperature is - 196 鈩?~ 800 鈩? It is used in the field open-air machines of chemical, coal and petroleum industries with high requirements of grain boundary corrosion resistance, heat-resistant parts of building materials and parts with difficult heat treatment Our main products (OD6MM~OD630; WT:1MM~45MM; LTH: 1M~15M) Stainless seamless pipe / tube, Duplex seamless pipe / tube and Nickel base seamless pipe / tube. Our main grades 304 / 304H / 304L / 316L / 317L / 321 / 321H / 347H / 310S / 904L / 316Ti 12X18H10T / 10啸17袧13袦2孝 S31803 / S32205 / S32750 N02200 series / N04400 / Alloy 600 / Alloy 601 / Alloy 625 / Alloy 800 series / Alloy 825 / C276 / C22 / B2 etc. Our main standards ASTM A213 / A269 / A312, ASME SA213 / SA269 / SA312, JIS G3459, EN10216-5, GOST 9941, DIN 17458鈥?/p> ASTM B163 / B165 / B167 / B407 / B444 / B622 / B729鈥?/p> The Certificates we hold ISO 9001 / ISO 14001 / OHSAS 18001 PED 2014/68/EU / AD2000, GOST R Classification Society factory approval of ABS, BV, CCS, DNV-GL, LRASTM A213 Stainless Steel Pipe manufacturers website:http://www.gsspipe.com/stainless-steel-pipe/astm-a213-stainless-steel-pipe/