Product : SUP 9 Spring Steel
Kategori : Spring Steel
Standard: JIS G 4801
Grades : SUP 9
Equivalent
DIN17221 55Cr3/ 1.7176, GB/T1222 60CrMnA, JIS G4401 steel, BS 527A60, 5160/ G51600
Characteristic
SUP9 has good hardenability
hot working performance
Availability
Flat
Chemical Composition
| Symbol of Class |
Chemical Composition % | |||||||
| C | Si | Mn | P Max. | S Max. | Cr | V | B | |
| SUP 3 | 0.75∼0.90 | 0.15∼0.35 | 0.30∼0.60 | 0.035 | 0.035 | - | - | - |
| SUP 6 | 0.56∼0.64 | 1.50∼1.80 | 0.70∼1.00 | 0.035 | 0.035 | - | - | - |
| SUP 7 | 0.56∼0.64 | 1.80∼2.20 | 0.70∼1.00 | 0.035 | 0.035 | - | - | - |
| SUP 9 | 0.52∼0.60 | 0.15∼0.35 | 0.65∼0.95 | 0.035 | 0.035 | 0.65-0.95 | - | - |
SUP 9A
|
0.56∼0.64 | 0.15∼0.35 | 0.70∼1.00 | 0.035 | 0.035 | 0.70-1.00 | - | - |
| SUP 10 | 0.47∼0.55 | 0.15∼0.35 | 0.65∼0.95 | 0.035 | 0.035 | 0.80-1.10 | 0.15-0.25 | - |
| SUP 11A | 0.55∼0.65 | 0.15∼0.35 | 0.70∼1.00 | 0.035 | 0.035 | 0.70-1.00 | - | 0.0005 min. |
| SUP 12 | 0.51∼0.59 | 1.20∼1.60 | 0.60∼0.90 | 0.035 | 0.035 | 0.60-0.90 | - | - |
| SUP 13 | 0.56∼0.64 | 0.15∼0.35 | 0.70∼1.00 | 0.035 | 0.035 | 0.70-0.90 | - | - |
| Note : The value of Cu as impurities shall not exceed 0.30% | ||||||||
Mechanical Properties
| Properties | SUP9 | |
| Tensile Strength Min (MPa) | 1226 | |
| Proof Stress Min (MPa) | 1079 | |
| Elongation Min (%) | 9 | |
| Hardness (HB) Max | 363-429 | |
| Supplied Condition | Annealed |
Physical Properties
| Properties | SUP 9 | |
| Density (×1000 kg/m3) | 7.70 | |
| Elastic Modulus (GPa) | 190-210 | |
| Poisson's Ratio | 0.27-0.30 | |
| Reduction in Area (%) | 48.4 | |
| Impact Strength (J) | 27.4 |
Application
Various important spring, such as automobile, locomotive, large plate spring, laminated springs, coiled springs and torsion bar springs, etc.
Related Grade:
SUP 3| SUP 6| SUP 7| SUP 9A| SUP 10| SUP 11A| SUP 12| SUP 13|
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