National stainless steel valve steel number implementation standard comparison

Stainless steel valve main performance use

304 stainless steel valve GBCr18Ni9, GB0Cr18Ni9 as a widely used stainless steel valve, has good corrosion resistance, heat resistance, low temperature strength and mechanical properties; stamping, bending and other hot workability, no heat treatment hardening phenomenon (non-magnetic , use temperature -196 ° C ~ 800 ° C).

321 stainless steel valve is equivalent to domestic 1Cr17Ni9Ti, 321 stainless steel valve performance is very similar to 304, but due to the addition of titanium metal, it has better resistance to intergranular corrosion and high temperature strength. Due to the addition of titanium metal, it effectively controls the formation of chromium carbide. The 321 stainless steel valve has excellent high temperature stress breaking (Stress Rupture) performance and high temperature creep resistance stress mechanical properties are better than 304 stainless steel valves. The 321 stainless steel valve is used in the field of open-air heat-resistant pipes in the chemical, coal and petroleum industries where the resistance to intergranular corrosion is high, and the heat treatment is difficult.

316 stainless steel valve national standard 0Cr17Ni12Mo2 GB 0Cr17Ni12Mo2, due to the addition of Mo, its corrosion resistance, atmospheric corrosion resistance and high temperature strength is particularly good, can be used under harsh conditions; excellent work hardening (non-magnetic). 316 stainless steel valve application : seawater, chemical, dye, paper, oxalic acid, fertilizer and other production equipment;

316L stainless steel valve GB 00Cr17Ni14Mo2 GB 00Cr17Ni14Mo2, as 316L stainless steel valve has the same characteristics as 316 stainless steel valve, its resistance to intergranular corrosion is better than 316; additionally increased molybdenum element, can significantly improve its resistance to intergranular corrosion, oxidation The ability of material stress corrosion, as well as the reduction of hot cracking tendency during welding. It also has good resistance to chloride corrosion. 316L stainless steel valve is used in: common for pure water, distilled water, medicine, sauce, vinegar, etc. In the case of strong dielectric corrosion, special applications for 316 stainless steel valves have special requirements for resistance to grain boundary corrosion.we are gate valve china,you can know it.

The 310S stainless steel valve is a standard method for stainless steel valves in the United States. The domestic number is (2520) 0Cr25Ni20, which is an austenitic stainless steel valve. The S in the 310S refers to the special purpose of the stainless steel valve. 0Cr25Ni20 (310S) Characteristics - High temperature oxidation resistance, high temperature strength. Uses - Exhaust pipe Bellows, microwave Heater, Tube, high temperature furnace, cremator and other stainless steel valves requiring heat resistance.

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