300Series 303/303Cu Stainless Steel Wire with High Strength
B-SPR/D-SPR Spring Wire for High Quality
| Material | Stainless Steel Wire |
| Grade | 300series (301, 302, 303, 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 |
Application for 303 stainless steel wire:
303: Bolts,nuts,shaft
303C: Non-magnetic shaft,free cutting processing
303C1: Non-magnetic quickly cut processed products
303F: Shaft
303FA : Free cutting
Advantages of stainless steel wire:
1. Highly resistant to rust and corrosion
2. High strength and robustness
3. Highly elastic and impact resistant to fire
| Steel Grade | DIN | Chemical composition |
| C | Si | Mn | P | S | Ni | Cr | Mo | Other composition |
| 303 | WNr1.4305 | ≤0.15 | ≤1.0 | ≤2.0 | ≤0.2 | ≤0.15 | 8.0-10 | 17.0-19.0 | | |
| 303C | | ≤0.15 | ≤1.0 | ≤3.0 | ≤0.2 | ≤0.15 | 8.0-10 | 17.0-19.0 | ≤0.6 | Cu:1.5-3.5 |
| 303C1 | | ≤0.15 | ≤1.0 | ≤3.0 | ≤0.2 | 0.2-0.33 | 8.0-10 | 17.0-19.0 | | Cu:0.5-1.0 |
| 303F | | ≤0.15 | ≤1.0 | ≤3.5 | ≤0.2 | 0.3-0.37 | 8.0-10 | 17.0-19.0 | | N:≤0.08 |
| 303FA | | ≤0.15 | ≤1.0 | ≤2.0 | ≤0.2 | 0.3-0.4 | 8.0-10 | 17.0-19.0 | ≤0.6 | N:≤0.10 |

| Steel Grade | Mecnanism value |
| Y.S | T.S | EL. | HRB |
| 303 | 240 | 620 | 55 | 81 |
| 303C | 270 | 575 | 48 | 76 |
| 303C1 | 280 | 575 | 55 | 84 |
| 303F | 265 | 620 | 56 | 77 |
| 303FA | 255 | 600 | 56 | 80 |
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.