321 stainless steel coil is a free-machining austenitic chromium-nickel austenitic alloy (18% Cr, 12% Ni) that provides good corrosion resistance in a wide range of corrosive environments.
321 stainless steel coils are widely used in the chemical and petrochemical industries where its corrosion resistance properties can be put to good use. The alloy also finds application in marine environments where chloride stress corrosion cracking must be avoided. It is also used for food processing equipment such as food blenders and mixers, beverage dispensing equipment and heat exchangers.
Specification
| International Standard | ASTM, AISI, JIS, ISO, EN, DIN, BS |
| Hardness | Soft, Hard, Half Hard, Quarter Hard, Spring Hard as customer’s requirements |
| Thickness | 0.02mm-6.0mm |
| Width | 1.0mm-1500mm |
| Edge | Slit/Mill |
| Paper Core Internal Diameter | Ø500mm paper core, special internal diameter core and without paper core on customer request |
| Surface Finish | NO.1/2B/2D/BA/HL/Brushed/6K/8K Mirror,etc |
| Technical Treatment | Cold Rolled, Hot Rolled |
| Mill Test Certificate(MTC) | EN10204 3.1 |
| Test Content | Flange & Flaring Test,Reverse Flattening Test, Roughness Test, Hydrostatic/Pneumatic Test, Eddy Current Test (NDT), Surface Finish Verification, Dimensional Inspection, Material Certification |
| Certificate | TUV ISO 9001:2015 , PED 2014/68/EU , AD 2000-WO DIN EN ISO 9606-1 , DIN EN ISO 14732 Welder Certificate EN ISO 9712 NDT Personnel Certificate EN ISO 15613 WPQR |
Chemical Composition %
| GRADE | C | Si | Mn | P | S | Cr | Ni |
| 321 | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.030 | 17.00-19.00 | 9.00-12.00 |
Mechanical Propertoes
| Grade | EN Grade | Yield Strength Rp0.2(N/mm²) | Tensile Strength Rm(N/mm²) | Hardness(HR B) | Vickers Hardness(HV) | Elongation A50% |
| 321 | 1.4541 | ≥205 | ≥520 | Annealed | ≤200 | ≥40 |