TECHNICAL INFORMATION
Anasayfa / Technical Information / Spring SteelsSPRING STEELS
The desired properties in steels to be used as spring material can be described as sufficient load strength, good flexibility, unlimited safety against breakage. These properties can only be possible with proper steel selection and heat treatment. It is essential that the material does not lose its ductility by increasing the load strength.
One of the important issues to be considered in the production of flexible parts is the inconvenience of welding the parts. Additionally; Events such as surface notch effect, internal cracks that may arise from heat treatment, decarburation that occurs on the surface and which disrupts the homogeneous hardness of the material can be specified as the reasons that increase the fracture effect. In addition, processes such as sensitivity of surface roughness, thermochemical hardening (nitrification), sandblasting can be said to reduce the risk of breakage.
If the steel material is formed at room temperature, high bending stresses occur, which reduces the flexibility of the manufactured part. For this reason, annealing of shaped parts at low temperatures is appropriate.
- SPRING STEELS AND COMPOSITIONS
- MECHANICAL PROPERTIES FOR SPRING STEELS
| SPRING STEELS AND COMPOSITIONS | ||||||||||
ITEM NUMBER | DIN | SAE/AISI | C | Si | Mn | Pmax | Smax | Cr | Mo | Nmax |
1.0900 | 38 Si 6 | - | 0.35-0.42 | 1.40-1.60 | 0.50-0.80 | 0.050 | 0.050 | - | - | 0.007 |
1.0902 | 46 Si 7 | - | 0.42-0.50 | 1.50-1.80 | 0.50-0.80 | 0.050 | 0.050 | - | - | 0.007 |
1.0903 | 51 Si 7 | - | 0.47-0.55 | 1.50-1.80 | 0.50-0.80 | 0.045 | 0.045 | - | - | 0.007 |
1.0904 | 55 Si 7 | 9255 | 0.52-0.60 | 1.50-1.80 | 0.70-1.00 | 0.045 | 0.045 | - | - | - |
1.0906 | 65 Si 7 | - | 0.60-0.68 | 1.50-1.80 | 0.70-1.00 | 0.050 | 0.050 | - | - | 0.007 |
1.0908 | 60 SiMn 5 | - | 0.55-0.65 | 1.00-1.30 | 0.90-1.10 | 0.050 | 0.050 | - | - | 0.007 |
1.0961 | 60 SiCr 7 | 9262 | 0.55-0.65 | 1.50-1.80 | 0.70-1.00 | 0.045 | 0.045 | 0.20-0.40 | - | 0.007 |
1.0970 | 38 Si 7 | - | 0.35-0.42 | 0.15-035 | 0.50-0.80 | 0.045 | 0.045 | - | - | 0.007 |
1.1231 | Ck 67 | 1070 | 0.65-0.72 | 0.15-0.35 | 0.60-0.90 | 0.035 | 0.035 | - | - | - |
1.1248 | Ck 75 | 1075 | 0.70-0.80 | 0.15-0.35 | 0.60-0.80 | 0.035 | 0.035 | - | - | - |
1.1269 | Ck 85 | 1086 | 0.80-0.90 | 1.50-1.80 | 0.45-0.65 | 0.035 | 0.035 | - | - | - |
1.1274 | Ck 101 | 1095 | 0.95-1.05 | 0.15-0.35 | 0.40-0.60 | 0.035 | 0.035 | - | - | - |
1.5028 | 65 Si 7 | - | 0.60-0.70 | 1.50-1.80 | 0.70-1.00 | 0.035 | 0.035 | - | - | - |
1.5029 | 71 Si 7 | - | 0.68-0.75 | 1.50-1.80 | 0.60-0.80 | 0.035 | 0.035 | - | - | - |
1.5225 | 51 MnV 7 | - | 0.48-0.55 | 0.15-0.35 | 1.60-1.90 | 0.035 | 0.035 | - | - | - |
1.7103 | 67 SiCr 5 | - | 0.62-0.72 | 1.20-1.40 | 0.40-0.60 | 0.035 | 0.035 | 0.40-0.60 | - | - |
1.7138 | 52 MnCrB 3 | 50B50 | 0.48-0.55 | 0.15-0.35 | 0.75-1.00 | 0.035 | 0.035 | 0.40-0.60 | B 0.0005 | |
1.7176 | 55 Cr 3 | 5155 | 0.52-0.59 | 0.15-0.40 | 0.70-1.00 | 0.035 | 0.035 | 0.60-0.90 | - | - |
1.7701 | 51 CrMoV 7 | - | 0.48-0.56 | 0.15-0.40 | 0.70-1.00 | 0.035 | 0.035 | 0.90-1.20 | 0.15-0.25 | - |
1.8159 | 51 CrV 4 | 6150 | 0.47-0.55 | 0.00-0.40 | 0.70-1.00 | 0.035 | 0.035 | 0.90-1.20 | - | - |
1.8161 | 58 CrV 4 | - | 0.55-0.62 | 0.15-0.40 | 0.70-1.00 | 0.035 | 0.035 | 0.90-1.20 | - | - |
| MECHANICAL PROPERTIES FOR SPRİNG STEELS | ||||||||
ITEM NUMBER | DIN | SAE/AISI | YIELD POINT (N/mm2) | TENSİLE STRENGTH (N/mm2) | ELONGATİON AT RUPTURE (%) | |||
1.0900 | 38 Si 6 | - | 1030 | 1180-1370 | 6 | |||
1.0902 | 46 Si 7 | - | 1080 | 1275-1470 | 6 | |||
1.0903 | 51 Si 7 | - | 1130 | 1320-1570 | 6 | |||
1.0904 | 55 Si 7 | 9255 | 1080 | 1275-1470 | 6 | |||
1.0906 | 65 Si 7 | - | 1080 | 1275-1470 | 6 | |||
1.0908 | 60 SiMn 5 | - | 1030 | 1320-1520 | 6 | |||
1.0961 | 60 SiCr 7 | 9262 | 1130 | 1320-1570 | 6 | |||
1.0970 | 38 Si 7 | - | 1030 | 1180-1370 | 6 | |||
1.7103 | 67 SiCr 5 | - | 1320 | 1470-1670 | 6 | |||
1.7176 | 55 Cr 3 | 5155 | 1180 | 1370-1620 | 6 | |||
1.7701 | 51 CrMoV 7 | - | 1180 | 1370-1670 | 6 | |||
1.8159 | 51 CrV 4 | 6150 | 1180 | 1370-1620 | 6 | |||
1.8161 | 58 CrV 4 | - | 1320 | 1470-1670 | 6 | |||