Brand Name :
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Type/Size/Grade/Variety :
Name of the product Bright Steel bars
Steel Designation/Grade and its properties As per Annexure- A
Finished condition Drawn Peeled and Polished Ground
Shape Round Round Round
Dimensions and tolerance classes 1.0 mm up to and including 30 mm
Tolerance class- h9,h10,h11 and h12 10.0 mm up to and including 30 mm
Tolerance class- h9,h10,h11 and h12 1.0 mm up to and including 30 mm
Tolerance class- h9,h10,h11 and h12
Annexure – A
Sr. No. Steel/Designation/Grade Chemical Composition Heat Treatment Carried out (if any) Mechanical Properties (if any)
1 XT90W6CoMo5Cr4V2/Bohler S705 SD C: 0.87 to 0.95
Si: 0.45 Max
Mn: 0.40 Max
P: 0.030 Max
S: 0.030 Max
Cr: 3.80 to 4.50
Mo: 4.70 to 5.20
V: 1.70 to 2.10
W: 5.90 to 6.70
Co: 4.50 to 5.00
Soft Annealed Hardness : 269 – 319 HB
2 XT90W6CoMo5Cr4V2/Bohler S705 SD C: 0.87 to 0.95
Si: 0.45 Max
Mn: 0.40 Max
P: 0.030 Max
S: 0.030 Max
Cr: 3.80 to 4.50
Mo: 4.70 to 5.20
V: 1.70 to 2.10
W: 5.90 to 6.70
Co: 4.50 to 5.00
Soft Annealed Hardness : 269 – 319 HB
3 XT90W6CoMo5Cr4V2/Bohler S705 SD C: 0.87 to 0.95
Si: 0.45 Max
Mn: 0.40 Max
P: 0.030 Max
S: 0.030 Max
Cr: 3.80 to 4.50
Mo: 4.70 to 5.20
V: 1.70 to 2.10
W: 5.90 to 6.70
Co: 4.50 to 5.00 Soft Annealed Hardness : 269 HB Max
4 Bohler S390 MICROCLEAN C: 1.40 to 1.90
Si: 0.90 Max
Mn: 0.60 Max
P: 0.030 Max
S: 0.030 Max
Cr: 4.00 to 5.50
Mo: 1.30 to 2.80
V: 4.00 to 5.50
W: 9.50 to 11.20
Co: 7.30 to 8.70
Soft Annealed Hardness : 320 HB Max
5 Bohler S790 MICROCLEAN C: 1.25 to 1.32
Si: 0.70 Max
Mn: 0.40 Max
P: 0.030 Max
S: 0.030 Max
Cr: 3.80 to 4.50
Mo: 4.70 to 5.20
V: 2.70 to 3.20
W: 5.90 to 6.70
Soft Annealed Hardness : 269 - 319 HB Max
6 Bohler S600 C: 0.86 to 0.94
Si: 0.45 Max
Mn: 0.40 Max
P: 0.030 Max
S: 0.030 Max
Cr: 3.80 to 4.50
Mo: 4.70 to 5.20
V: 1.70 to 2.10
W: 5.90 to 6.70
Co: 0.80 Max
Soft Annealed Hardness : 269 HB Max
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