302 / 3021A Stainless Steel Spring Wire Bright / Matte Surface ISO Certificate
Brand Name:MTSCO
Certification:ISO 9001
Model Number:MTSCOSSW16
Minimum Order Quantity:negotiable
Delivery Time:20 Days
Payment Terms:T / T ; L / C
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Location:
Jiaxing Zhejiang China
Address:
No. 501, Changsheng South Road, Occident Biotechnology Industry Park, Jiaxing, Zhejiang
Supplier`s last login times:
within 33 hours
Product Details
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Product Details
Hot Sale 302/3021A Stainless Steel Spring Wire Bright/Matte Surface With ISO Certificate
| Material | Stainless Steel Wire |
| Grade | 300series (301, 302,3021A, 304, 304L, 304H, 304N, 304ES, 316L, 321...) 130M, 200CU, 201CU, 202, , 410, 420, 430,etc |
| Standard | ASTM A580, JIS G4309, EN 10088-3, GB/T4240, etc |
| Size | φ0.15mm-φ16mm; or according to customers' requests |
| Surface | Bright, matte ,downy, electrolysis bright ,cloudy ,plain ,black,etc |
| Condition | Annealed and Soft, 1/2 hard, 3/4 hard and full hard |
| Type | Spring Wire (B-SPR/D-SPR) |
| Packing | Woven bag, core, wooden reel, etc |
302/304 stainless steel wire is the most widely used stainless steel wire due to its high corrosion resistance and good tensile strength. It is a general-purpose stainless steel alloy, usually consisting of 18% chromium and 8% nickel. For spring applications, it is typically offered in the cold drawn condition. 302/304 springs have good strength at moderate temperatures up to 500°F. 302/304 is non-magnetic in the annealed condition, but the material in the spring condition is slightly magnetic due to some martensitic transformation during the drawing operation. The higher the cold reduction, the higher the degree of magnetism.
| Steel Grade | DIN | Chemical composition | ||||||||
| C | Si | Mn | P | S | Ni | Cr | Mo | Other composition | ||
| 302 | WNr1.6900 | ≤0.15 | ≤1.0 | ≤2.0 | ≤ 0.045 | ≤0.03 | 8.0-10 | 17.0-19.0 | ≤0.6 | Cu:≤1.0 |
| 3021A | ≤0.15 | ≤1.0 | ≤2.0 | ≤ 0.045 | ≤0.03 | 8.0-10 | 17.0-19.0 | ≤0.6 | ||
Application for 304 stainless steel wire:
302: High-Quality Springs
3021A: Tight Wire
| Steel Grade | Physical Property | |||
| Y.S | T.S | EL. | HRB | |
| 302 | 248 | 627 | 62 | 78 |
| 3021A | 227 | 600 | 55 | |
MTSCO is a professional supplier of steel wire with complete production technology and rich management experience. We produce spring wire, electrolytic polished wire, fine wire, wire for netting, hose wire, welding wire, cold heading, locking wire, and other products. Our main materials are stainless steel and alloy steel, and the raw materials we use are from the biggest and most well-known steel mills in China, we can supply wire in sizes ranging from 0.15 mm to 16 mm in diameter. Our factory is well-equipped and our products conform to ASTM, DIN, GTB, JIS, JSG, and other international standards. We have experienced foreign trade staff with high-quality service and can produce high-quality products according to customers' requirements.
Quality Control
Raw Materials: MTC checking(PMI), Tensile strength test,
Surface/Dimension inspection
Prodcution: Specially assigned person shall follow up and check
according to the process flow card, and finally keep the copy
Before shipment: Mechanical properties test, Surface/Dimension
inspection, or according to customers’ requirement
302 / 3021A Stainless Steel Spring Wire Bright / Matte Surface ISO Certificate
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