Chinese Supplier Stainless Steel Spring Wire 302/302HQ with Annealing and Soft High Elastic
Material: Stainless Steel Wire
Grade: 300series (301, 302, 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 | |
| XM7(302HQ) | WNr1.4587 | ≤0.08 | ≤1.0 | ≤2.0 | ≤0.045 | ≤0.03 | 8.5-10.5 | 17.0-19.0 | | Cu:3.0-4.0 |
Application for 316 stainless steel wire:
302: High-Quality Springs
3021A: Tight Wire
XM7(302HQ): Cross Bolt,Screw
| Steel Grade | Physical Property |
| Y.S | T.S | EL. | HRB |
| 302 | 248 | 627 | 62 | 78 |
| 3021A | 227 | 600 | 55 | |
| XM7(302HQ) | 180 | 480 | 56 | 60 |
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.
Prouction Process:
Wire→Rod→Inspection→Surface Coating→Drawing (surface treatment:bright/matte)→Annealing→Inspection→Packing→Finished Wire
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Annealing And Soft Stainless Steel Spring Wire 302 / 302HQ High Elastic Images
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