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SUS304 material standards

304 stainless steel:     

in the air or chemical corrosion corrosion resistant high alloy steels, the surface of stainless steel is beautiful and good corrosion resistance, color without plating, surface treatment, surface performance of play inherent in stainless steel, used in a wide range of steel, often referred to as stainless steel. Represents the properties of 13 CR steel, chrome-nickel steel, high alloy steel 18-8.  

from the perspective of metallography, because stainless steel contains chromium and chromium thin film formed on the surface, this membrane isolated from oxygen corrosion of steel into the role.  

in order to maintain the inherent corrosion resistance of stainless steel, chromium steel must contain more than 12%.  

304  is a universal stainless steel, which is widely used to produce good overall performance requirements (corrosion resistance and formability) of equipment and parts.  

304 stainless steel in accordance with United States ASTM standards produce a grade of stainless steel. 304 is equivalent to our 0Cr19Ni9  (0Cr18Ni9) stainless steel. 304 19% chromium, nickel-containing 9%.  

304 stainless steel, heat-resistant steel is the most widely used. Food chemical industry equipment, nuclear energy and other production equipment, to the past.

304 stainless steel chemical composition

specifications  C Si Mn P S Cr Ni (nickel)  Mo

SUS304 ≤0.08 ≤1.00 ≤2.00 ≤0.05 ≤0.03 18.00-20.00 8.25~10.50 -


310S stainless steel


310S are austenitic chromium-nickel stainless steel with very good oxidation resistance, corrosion resistance, because a higher percentage of chromium and nickel, 310S has good creep strength, can continue to work at high temperature, with good temperature resistance.

310S stainless steel (2520) resistance high temperature pipe;  310S for nickel (Ni), and chrome (Cr) content high, has good resistance oxidation, and resistance corrosion, and acid salt, and resistance high temperature performance, resistance high temperature pipe designed for manufacturing electric furnace tube, occasions, Austrian's size stainless steel in the increased carbon of content Hou, due to its solid dissolved strengthened role makes strength get improve, Austrian's size stainless steel of chemical components characteristics is to chrome, and nickel for based added Mo, and tungsten, and NB and titanium, elements, Because of its organization to face-centered cubic structure, which has high strength at high temperature and creep strength.

chemical composition:

C :≤0.08,

Si :≤1.00,

Mn :≤2.00,

P :≤0.035,

S :≤0.030,

Ni :≤19.00-22.00,

Cr :≤24.00-26.00

[1] mechanical properties:

hardness (HB)  : ≤ 187

tensile strength (б b) (Mpa)  : ≥ 520

yield strength (σ, s) (Mpa)  : ≥ 205

elongation (δ)% : ≥ 40

the shrinkage (ψ)% : ≥ 50

201 stainless steel


201 stainless steel, acid, alkali, high density, high polishing without bubbles, pinholes and other features, is the production of casing, bottom straps are high quality materials. Mainly used as a decorative tube, industrial pipes, products with some light stretching.

chemical composition (%):

Chemicai composition(WT%) 

(c)   c: ≤ 0.15

(Si),   SI: ≤ 0.75

(Mn)   MN: 5.5~7.50

(Cr)   CR: 16.0~18.0

(n)   n: ≤ 0.25

(Ni)   NI: 3.50~5.50

(p)   p: less than 0.060

(s)   s: ≤ 0.030 

physical properties:  

tensile strength: 100,000 to 180,000 PSI 

yield strength: 50,000 to 150,000 PSI 

 :55 to 60%  elongation;

young's modulus: 29,000,000 PSI 

 :.280lbs/cubic inch density (density 7.93kg/cm3)