TORICH INTERNATIONAL LIMITED
TORICH INTERNATIONAL LIMITED The Steel Tube Maker
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TORICH ASTM A519 JIS SCM430 DIN 30GrMo4 SAE4130 Chrome Moli Alloy Round Seamless AISI4130 Steel Tube For Bicycle Motorcycle Frame
1. Grade: JIS SCM430, DIN 30GrMo4, SAE4130/ AISI4130
2. Size: O.D.:6-350mm W.T.:1-35mm L:max12000mm
3. Standard: ASTM A519
4. Certification: ISO9001,TS16949
5. Applications: for Auto industry/for machinery use/Motorcycle frame
6. Chemical Composition and Mechanical Property:
| Chemical Composition(%) | Mechanical Property | |||||||||
| C | Si | Mn | S | P | Cr | Ni | Cu | Mo | Yield Strength | Tensile Strength |
| ( σs ) | ( σb ) | |||||||||
| 0.28~0.33 | 0.15~0.30 | 0.40~0.60 | ≤0.04 | ≤0.035 | ≤0.15 | 0.80~1.10 | / | 0.15~0.25 | ≥785(80) (MPa) | ≥930(95) |
| (MPa) | ||||||||||
7. Delivery Conditions
1) BKW (+LC) After last heat treatment there is a light finishing pass (cold drawing)
2) BKS (+SR) After the final cold forming process the tubes are stress relieve annealed.
3) GBK (+A) After the final cold forming process the tubes are annealed in a controlled atmosphere.
4) NBK (+N) After the final cold forming process the tubes are annealed above the upper transformation point in acontrolled atmosphere.
