Product Details

5140 Steel Round Bar Chemical Composition

Stand	Grade	C (%)	Mn (%)	P (%)	S (%)	Si (%)	Cr (%)	Ni (%)	Mo (%)	Cu (%)
GB/T 3077-1999	40Cr (A20402)	0.37-0.44	0.50-0.80	≤0.035	≤0.035	0.17-0.37	0.80-1.10	≤0.30	≤0.15	≤0.30
GB/T 3077-1999	40CrA (A20403)	0.37-0.44	0.50-0.80	≤0.025	≤0.025	0.17-0.37	0.80-1.10	≤0.30	≤0.10	≤0.25
GB/T 3077-1999	40CrE (A20406)	0.37-0.44	0.50-0.80	≤0.025	≤0.015	0.17-0.37	0.80-1.10	≤0.30	≤0.10	≤0.25
ASTM A29/A29M-05	5140	0.38-0.43	0.70-0.90	≤0.035	≤0.040	0.15-0.35	0.70-0.90	–	–	–
EN 10083/3-2006	41Cr4 (1.7035)	0.38-0.45	0.60-0.90	≤0.025	≤0.035	≤0.40	0.90-1.20	–	–	–
ISO 683/1:1987	41Cr4	0.38-0.45	0.60-0.90	≤0.035	≤0.035	0.10-0.40	0.90-1.20	–	–	–
JIS G4053-2008	SCr440	0.38-0.43	0.60-0.90	≤0.030	≤0.030	0.15-0.35	0.90-1.20	≤0.25	–	–

1.7035 Steel Physical Properties

Properties	Metric	Imperial
Density	7.85 g/cm³	0.284 lb/in³

5140 Steel Mechanical Properties

Mechanical Properties	Metric	Imperial
Tensile strength	＞980 MPa	142140 psi
Yield strength	＞785 MPa	113855 psi
Elongation at break	＞9%	＞9%
Reduction of area	＞45%	＞45%
Hardness	≤207HB	≤207HB

5140 Steel Application

After hardening and tempering, it can be used to make the fittings for machines with high medium load and speed of work. Such as the automobile knuckle, gear wheel and axis of the machine tools. If it had been quenching and tempering with medium temperature, it will be a great choice for fittings with high load, low impact and good wearing resistance. Such as the gear wheel, lantern ring and etc. And after quenching and low-temperature tempering, the properties will be better than the last one. People usually use it to make the parts with good wearing resistance and handle high load, low impact. And you can see the principal axis, mechanical bolt and etc are made of it.