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stainless steel coil

321 stainless steel coil

About  321 material:

321 stainless steel is Ni-Cr-Ti-type austenitic stainless steel, its performance is very similar to the 304, but due to the addition of the metal titanium, it has a better intergranular corrosion resistance and high temperature strength. The addition of titanium, making it effective control of the formation of chromium carbide.

Excellent high-temperature stress of 321 stainless steel with a breaking (Stress Rupture) properties and high temperature creep resistance (Creep Resistance) stress mechanical properties are superior to 304 stainless steel.

321 SS is Widely used in the open field machinery applied grain boundary corrosion resistance for high chemical, coal, oil industry, building materials, heat-resistant parts and heat treatment difficult parts: oil combustion exhaust pipes, engine exhaust pipes, boiler shells, heat exchange , a furnace parts, diesel engine muffler parts, boilers and pressure vessels, chemical trucks, expansion joints, pipes and dryer burner spiral welded pipe.


321 Chemical compostion

C(%)Si(%)Mn(%)Cr(%)P(%)S(%)N(%)Ni(%)Mo(%)
≤0.08≤1.0≤2.0017.0-19.0≤0.035≤0.03'---9.0-12.0'---

321 Mechanical property

抗拉强度(Mpa)
tensile strength
屈服强度(Mpa)
Yield Strength
伸长率(%)
Elongation
断面收缩率(%)
rate of reduction in area
密度(g/cm3)
Density
≥520≥205≥40≥507.93

Specification for 321 SS grade

TechnicalThicknessWidthFinishStatus
Cold rolled0.40mm-3.00mmStandard width in China: 1219mm  1500mm 
Special width:
Based on customer's require.
2B  /No.4 / HL / Mirror etcsheet/ coil 
Hot rolled3.00mm-80.00mmStandard width in China: 1500mm 
Special width:
Based on customer's require.
No.1 Plate / coil 


Application for 321 material

321 stainless steel is widely used in anti - grain boundary corrosion demanding chemical, coal, oil industry outdoor machine, heat resistant parts of building materials and heat treatment of difficult parts.Sunch as

oil burning gas pipeline

engine exhaust pipe

boiler shell, heat exchanger, furnace parts Noise components 

diesel engine

boiler pressure vessel

chemical transport vehicles

expansion joint

Spiral welded pipe and combustion furnace pipe and drying machine








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