ASTM A29/A29M 5160 alloy structural steel, belongs a spring steel. The properties of 5160 round bars, is higher than Si-Mn spring steel, but lower than Si spring steels. So is mainly used in the field of vehicles,tractors etc. heavy machines. According to the properties, 5160 round bars is usually used with big diameter.
ASTM A29/A29M 5160 can be produced into hot rolled round bars and square bars, cold-drawing bars,forged bars. We henan KUNFENG can supply ASTM A29/A29M 5160 all of shapes.
According to the market needs, henan KUNFENG supply the oversea markets for ASTM A29/A29M 5160 hot rolled round bars OD 6mm -80 mm and 5160 forged round bars OD 80 mm - 1200 mm, also ASTM A29/A29M 5160 forged square bars OD 100- 1200 mm. The OD tolerance is about 0-3mm and length tolerance is about 0-20 mm.
are usually produced under the followed procedures: EAF arc furnace + LF purify affinage + VDF + ingot steel(bottom gating /argon) + forged + annealing + black polishing (turnery) + Sep 1921-C/c,D/d,E/e UT test + smooth edges with sawing .
chemical composition by %,maximum
Grade |
C |
Si |
Mn |
Cr |
Ni |
Cu |
P |
S |
ASTM A29/A29M 5160 |
0.56-0.61 |
0.15-0.35 |
0.75-1.0 |
0.7-0.9 |
≤0.35 |
≤ 0.25 |
≤0.035 |
≤0.04 |
mechanical properties
Grade |
Delivery State |
T.S. N/mm2 Min |
Y.S. N/mm2 Min |
A,% Min |
Z,% Min |
Hardness, (annealing or tempering) HB,max |
Forging ratio |
Grain Size (level) |
Nonmetal ratio |
ASTM A29/A29M 5160 |
Hot rolled, forged, or heat treatment |
1225 |
1078 |
9 |
20 |
321 |
≥ 4:1 |
≥ 6 |
≤ 2.0 |
If you need , or other spring steel grades,pls be free to contact us.