| Products according to GOST 20072 Oil quenching and tempering Note For bars with a diameter or thickness over 90 mm to 150 mm, a reduction in elongation of 2 abs.% Is allowed, |
| relative narrowing by 5 abs.% and impact strength by 10 rel.%. |
| For bars with a diameter or thickness of 151 mm and above, a reduction in relative elongation by 3 abs.%, Relative narrowing by 10 abs.% And impact strength by 15 rel.% Is allowed |
| In steel of the highest quality category, the temporary tensile strength is limited: the minimum allowable value must correspond to the specified values, |
| and the maximum should not exceed the minimum by 196 N / mm2 |
| Diameter: <90 mm; Yield strength:> 440 MPa Tensile strength:> 640 MPa Elongation:> 18% |
| Products according to GOST 20072 At the request of the consumer Diameter: <90 mm; Impact strength KCU at 20 ° C:> 118 J / cm2 |
| Products according to GOST 20072 Creep and long-term strength values Temperature: 450 ° C; Creep limit corresponding to 1% of total deformation per 100,000 h:> 157 MPa Creep limit corresponding to 1% of total deformation for 10,000 h:> 226 MPa |
| Products according to GOST 20072 Creep and long-term strength values Temperature: 500 ° С; Creep limit corresponding to 1% of the total strain for 10,000 hours:> 118 MPa |
| Products according to GOST 20072 Creep and long-term strength values Temperature: 550 ° C; Creep limit corresponding to 1% of the total strain for 10,000 hours:> 74 MPa |
| Weldability By NAKS Group: M03 (W03) |
| Operational characteristics According to GOST R 54803-2011 Forgings Application temperature: -40 - 510 ° C |
| Performance characteristics According to STO 00220227-006-2010 Application temperature: -50 - 510 ° C |
| According to TU 14-3R-251-2007 Longitudinal samples Yield strength:> 441 MPa Tensile strength:> 637 MPa Elongation:> 18% |
| According to TU 14-3R-251-2007 Longitudinal samples Hardness HB: 197 - 241 Impact strength KCU at 20 ° C:> 118 J / cm2 |
| Cross Samples Yield Strength:> 441 MPa Tensile Strength:> 637 MPa Elongation:> 16% |
| Transverse samples Hardness HB: 197 - 241 Impact strength KCU at 20 ° C:> 107.8 J / cm2 |
| Calculated Properties Density: 7.92 g / cm3 |