Brand Name :
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Type/Size/Grade/Variety :
Name of the product Bright Steel Bars
Product Designation As per Annex-A
Treatment Condition at Delivery Cold drawn (+C)
Product Form Round
Sizes Diameter from 09 mm to 30mm
Surface Quality Class Class 3
Annex-A
S. No Steel Designation / Grade Chemical Composition (%) Mechanical Properties (if any)
1.
IS 9550 SAE9254 C: 0.51 to 0.59
Si: 1.2 to 1.6
Mn: 0.6 to 0.8
P: 0.02 Max
S: 0.02 Max
Cr: 0.6 to 0.8 - Tensile Strength (min.): 1570 Mpa
- Hardness: 444 to 514 HB
2. IS 9550 POSHIS125 C: 0.51 to 0.57
Si: 1.4 to 1.7
Mn: 0.55 to 0.80
P: 0.017 Max
S: 0.010 Max
Cr: 0.6 to 0.8
Ni: 0.25 to 0.35
Cu: 0.25 to 0.35
B: 0.0005 to 0.0025
V: 0.05 to 0.15
Ti: 0.01 to 0.04
Al: 0.001 to 0.04
Nb 0.015 to 0.04
- Hardness: 505 to 590 HB
3. IS 9550 POSHIS120S C: 0.51 to 0.55
Si: 1.3 to 1.6
Mn: 0.55 to 0.75
P: 0.017 Max
S: 0.010 Max
Cr: 0.6 to 0.8
Ni: 0.1 to 0.3
Cu: 0.1 to 0.3
V: 0.05 to 0.10
Ti: 0.01 to 0.04 - Hardness: 495 to 578 HB
4. IS 9550 SUP9D C: 0.56 to 0.60
Si: 1.5 to 3.5
Mn: 0.75 to 0.95
P: 0.035 Max
S: 0.035 Max
Cr: 0.8 to 0.9
- Hardness: 380 to 460 HB
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