Cold Drawn / Rolled Alloy Steel Pipe Seamless For Gear Wheel Axle Shaft
Seamless Cold Drawn Or Cold Rolled Alloy Steel Tubing 41Cr4 40Cr DIN1.7035 For Gear Wheel , Axle , Shaft
Alloy Steel Tubes 41Cr4 40Cr DIN1.7035
International equivalent:
JIS: SCr440
ASTM: 5140
ISO: 41Cr4
41Cr4DIN1.7035:
C:0.42
Si:0.25
Mn:0.70
Cr: 1.05
40Cr:
C:0.37-0.44
Si:0.17-0.37
Mn:0.50-0.80
Cr:0.80-1.10
Seamless steel tubes with these steel grade could achieve good mechanical properites with quenching and tempering heat treatment (QT), could also heat treatment with annealed.
Application:
Gear wheel, axle, shaft, etc
Tensile strength ≥980 Mpa
Yield strength ≥785 Mpa
Elongation ≥9
Hardness ≤229HBS
QUALITY CONTROL
1~ Incoming Raw Material Inspection
2~ Raw Material Segregation to avoid steel grade mix-up
3~ Heating and Hammering End for Cold Drawing
4~ Cold Drawing and Cold Rolling, on line inspection
5~ Heat Treatment, +A, +SRA, +LC, +N, Q+T
6~ Straightening-Cutting to specified length-Finished Measuring Inspection
7~ Machanical Testing in own labs with Tensile Strength, Yield Strength, Elongation, Hardness, Impact, Mictrostruture etc
8~ Packing and Stocking.
100% of our steel tubes are dimensionally checked
100% of our steel tubes are visually checked to assure they have a perfect surface condition and no surface defects.
100% eddy current test and ultrosonic test to eliminate longitudinal and transversal defects.
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