GB Standard Heavy Steel rails (38kg/k~75kg/m)
GB Standard Heavy Steel rails (38kg/k~75kg/m) 1.good quality ,competitive price 2.Application: Railway Rail
Steel rails
| Characteristics of Heavy Railway Rail | |||||||||
| [GB 2585-2007] | |||||||||
| Specifications & Quality | |||||||||
| RAIL TYPEkg/m | SECTIONAL DIMENSION/mm | Sectional Area/cm2 | THEORY QUATITY | ||||||
| HEIGHT | WIDTH | HEAD | THICKNESS | Quality/per meter | quality deducted bolt hole | ||||
| A | B | C | D | 12.5m | 25m | ||||
| 38 | 134 | 114 | 68 | 13 | 49.5 | 38.733 | 483.739 | 967.902 | |
| 43 | 140 | 114 | 70 | 14.5 | 57.0 | 44.653 | 557.690 | 1115.853 | |
| 45 | 145 | 126 | 67 | 14.5 | - | - | - | - | |
| 50 | 152 | 132 | 70 | 15.5 | 65.8 | 51.514 | 643.429 | 1287.354 | |
| 60 | 176 | 150 | 73 | 16.5 | 77.45 | 60.64 | 757.409 | 1515.409 | |
| 75 | 192 | 150 | 75 | 20 | 95.037 | 74.604 | 948.105 | 1895.758 | |
| Heavy Rail Railway Chemical Composition | |||||||||
| GRADE | Chemical Composition(Quality Score)(%) | ||||||||
| C | Si | Mn | Cu | S<= | P<= | ||||
| U71 | 0.64-0.77 | 0.13-0.28 | 0.60-0.90 | - | 0.050 | 0.040 | |||
| U74 | 0.67-0.80 | 0.13-0.28 | 0.70-1.00 | - | 0.050 | 0.040 | |||
| U71Cu | 0.65-0.77 | 0.15-0.30 | 0.70-1.00 | 0.10-0.40 | 0.050 | 0.040 | |||
| U71Mn | 0.65-0.77 | 0.15-0.35 | 1.10-1.50 | - | 0.040 | 0.040 | |||
| U70MnSi | 0.65-0.75 | 0.85-1.15 | 0.85-1.15 | - | 0.040 | 0.040 | |||
| U71MnSiCu | 0.65-0.77 | 0.70-1.10 | 0.80-1.20 | 0.10-0.40 | 0.040 | 0.040 | |||
| The Mechanica Properties of rail railway | |||||||||
| GRADE | Tensile Strength | Elongation | GRADE | Tensile Strength | Elongation | ||||
| b/Mpa>= | δ5(%)>= | b/Mpa>= | δ5(%)>= | ||||||
| U71 | 785 | 10 | U71Mn | 885 | 8 | ||||
| U74 | 785 | 9 | U70MnSi | 885 | 8 | ||||
| U71Cu | 785 | 9 | U71MnSiCu | 885 | 8 | ||||
| PS: Hot saw samples taken tension specimen rail cut,the test results allowed numerical reduce 1 %(absolute value) | |||||||||
GB Standard Heavy Steel rails (38kg/k~75kg/m)
