Customization: | Available |
---|---|
Type: | Seamless or ERW Welded |
Technique: | Cold Drawn or ERW |
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Delivery Condition: BK.BKW,BK+S,GBK,NBK
Straightness: 0.5mm/1m max for tubes below 3m,0.8mm/1m max for tubes between 3 to 6m, 1.2mm/1m for tubes above 6m
Technology: Honed & SRB (Skived and Roller Burnished).
Application: used in the hydraulic cylinder of the Heavy Machinery, Cranes, Excavator and Forklifts.etc
ASTM A519 4140 Chemical Composition
4140 |
C |
Si |
Mn |
Cr |
Mo |
P |
S |
Min. % |
0.36 |
0.10 |
0.65 |
0.75 |
0.15 |
0 |
0 |
Max % |
0.44 |
0.40 |
1.10 |
1.20 |
0.35 |
0.04 |
0.04 |
ASTM A519 4140 Mechanical properties
4140 |
Tensile KSI |
0.2% Proof Stress KSI |
Elongation |
Reduction of area% |
Hardness HRC |
Hardness Brinell |
min |
100 |
80 |
20 |
40 |
180 |
217 |
max |
130 |
110 |
/ |
/ |
22 |
235 |