Commodity: Hot rolled spring steel bar
1. Material JIS: SUP9; SUP9A; SUP10; SUP7; SUP12; SUP12V; SUP6;SUP7.
SAE: SAE9254; SAE5160; SAE9260;SAE6150.
DIN: 55Cr3; 51CrV4; 52CrMoV4; 55Si7; 60Si7; 28MnSiB; 58CrMnB4; 27MnMoVB;
65Mn; 55CrSi; 50CrV; 60Si2Mn; CK67; 60Si2CrVA; 60Si2CrMnA.
2. Usage The brake shaft; household appliances; auto and motorcycle parts; spiral spring;
mattress furniture; spring etc.
3. Size Diameter: 12mm-300mm
4. Material chemical composition
|
Steel grade |
C |
Mn |
S |
P |
Si |
Cr |
Cu |
|
SUP9 |
0.52～0.60 |
0.65～0.95 |
≤ 0.030 |
≤ 0.030 |
0.17～0.37 |
0.65～0.95 |
≤0.25 |
|
SAE9254 |
0.51～0.59 |
0.60～0.90 |
≤0.040 |
≤0.035 |
1.20～1.60 |
0.60～0.80 |
|
|
SAE6150 |
0.48～0.53 |
0.70～0.90 |
≤ 0.035 |
≤ 0.040 |
0.15～0.35 |
0.80～1.10 |
|
|
55CrSi |
0.50～0.60 |
0.50～0.80 |
≤ 0.030 |
≤ 0.03 |
1.20～1.60 |
0.50～0.80 |
≤ 0.02 |
|
60Si2Mn |
0.56～0.64 |
0.60～0.90 |
≤ 0.035 |
≤ 0.035 |
1.60～2.00 |
≤ 0.035 |
≤0.25 |
|
50CrVA |
0.46～0.54 |
0.50～0.80 |
≤ 0.030 |
≤ 0.030 |
0.17～0.37 |
0.80～1.10 |
|
|
50CrV |
0.46～0.54 |
0.50～0.80 |
≤ 0.030 |
≤ 0.030 |
0.17～0.37 |
0.80～1.10 |
≤0.25 |
|
CK67 |
0.63～0.68 |
0.50～0.80 |
≤ 0.035 |
≤ 0.035 |
0.10～0.30 |
≤0.15 |
≤0.25 |
5. Mechanical properties
|
Steel grade |
Yield strength Mpa |
Tensile strength Mpa |
Elongation A% |
Reduction of area Z% |
|
60Si2Mn |
≥1175 |
≥1275 |
A11.3≥5 |
≥25 |
|
55CrMnA |
≥1075 |
≥1225 |
≥9 |
≥20 |
|
60CrMnA |
≥1075 |
≥1225 |
≥9 |
≥20 |
|
50CrVA |
≥1125 |
≥1275 |
≥10 |
≥40 |
Note: Mechanical properties for quenched and tempered samples after the performance.
