DIN 1.0904/55Si7 Hot Rolled Steel Bar ,Spring Steel Round Bar , Size 10-350mm , Length as your request
1. RELATED SPECIFICATIONS:
| USA | AISI 9255 |
| ASTM A29/A29M-91 9255 |
| SAE 9255 |
| Japan | JIS SUP6 |
| Germany | DIN 55Si7/1.0904 |
| Great Britain | BS 250A53 |
| France | NF 55S6/56S7 |
2. TYPICAL CHEMICAL ANALYSIS:
Spring Steel round bar DIN 1.0904/55Si7
| Elements | Carbon | Manganese | Silicon | Chromium | Molybdenum | Phosphorus | Sulfur | Cuprum |
| DIN 55Si7 | 0.52-0.60 | 0.60-0.90 | 1.50-2.00 | 0.25 max | / | 0.035 max | 0.035 max | 0.25 max |
Note: Aboved data is based on GB 55Si2Mn, Chemical compositions can be adjusted according to your requirements.
3. HEAT TREATMENT CONDITION AND MECHANICAL PROPERTIES:
Spring Steel round bar DIN 1.0904/55Si7
| Heat Treatment | Mechanical Properties | Hardness |
| Normalizing | Quenching | Tempering | Tensile
Strength
(Mpa) | Yield Point (Mpa) | Elongation (%) | Reduction of area (%) | Impact Absorbing Energy (J) | Before Heat Treatment (HB) |
| Celsius Degree | MIN | MAX |
| / | 870 | 480 | 1275 | 1117 | 6 | 30 | / | / |
4. SIZE RANGE:
Diameter:10-350mm
Length:200-1300mm(cut as your requirement)
5. CERTIFICATE OF QUALITY :
Issued in English , in addition the normal terms, production process, the mechanical property (yield strength,tensile strength, elongation and hardness. forged ratio, UT test result,Grain size, heat treatment methods and the sample of is shown on the certificate of quality.
6. MARKING :
Heat No. will be cold stamped and steel grade, diameter (mm)length(mm) and the manufacture Logo and weight(KG) is painted.
7. PACKAGE AND DELIVERY:
Seaworthy package or as your requirments;
10-25 days after confirmed.
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DIN 1.0904 / 55Si7 Spring Steel Round Bar , Size 10-350 Mm Round Steel Bar Stock Images
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