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| Type: | Spring Steel Strip |
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| Standard: | AISI, ASTM, DIN, JIS, GB |
| Composition: | Ferrous Steel Scrap |
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Audited by an independent third-party inspection agency
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Delivery condition (strip, coil, sheet) |
Grade based on DIN Standard |
High quality heat treating steel strip, coil, sheet supply capacity and condition |
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Hardness<20HRC |
Hardness 29-55HRC |
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annealed |
hardened and tempered |
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thickness |
Width |
thickness |
Width |
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High carbon steel |
CK50, CK55, CK60, CK67, CK70, CK75, C75Cr1 |
0.15-2.5mm |
8-600mm |
0.15-2.5mm |
8-300mm |
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Alloy spring steel |
50CrV4,51CrV4, 60Si2Mn |
0.20-2.2mm |
8-180mm |
0.20-2.2mm |
8-180mm |
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Edge process |
Slit edge; both rounded; one side round, one side slit; square etc |
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Finish surface |
Polished (blue, yellow, white, gray-blue, black, bright) or Nature etc |
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Tolerance |
Thickness +/-0.01mm max; width +/-0.05mm max |
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Physical property |
Tensile strength: 450-1850N/mm2 |
| Chemical Element Content For Reference | ||||
| Q195 Chemical Element Content | ||||
| C | Mn | Si | S | P |
| ≤0.12 | ≤0.50 | ≤0.30 | ≤0.040 | ≤0.035 |
| Q235 Chemical Element Content | ||||
| C | Mn | Si | S | P |
0.12~0.20% |
0.30~0.67 | ≤0.30 | ≤0.045 | ≤0.045 |
| 65Mn Chemical Element Content | ||||
| C | Mn | Si | S | P |
| 0.62~0.70% | 0.9~1.20% | 0.17~0.37% | ≤0.035 | ≤0.035 |
| Q345 Chemical Element Content | ||||
| C | Mn | Si | S | P |
| ≤0.20 | ≤1.70 | ≤0.55 | ≤ 0.040 | ≤ 0.040 |
| Mechanical Property For Reference | |||
| Grade | Yield Strength/Mpa | Tensile Strength/Mpa | Elongation / % |
| Q195 | 195 | 315~430 | 33 |
| Q235 | 235 | 375~500 | 25 |
| Q345 | 345 | 490~675 | 21 |

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