BHW35-87 BHW35
2012年3月8日 by admin
1,Applicable scope
1.1 the conditions equivalent USES Germany thyssen company "with high temperature welding structure steel plate BHW35 (13 MnNiMo54)-87.6 and technical conditions", it is suitable for manufacturing boiler equipment, pressure vessel and its component with thickness of 16 to 150 mm steel plates.
1.2 for benxi steel temperature not over 400 ℃ of various components, such as boiler drum, pressure vessel, wave tube and its components.
2, size, shape, weight and permissible deviation should be allowed to meet the provisions of GB709-88 standard.
3,technical requirements
3.1,chemical composition
The chemical composition of steel (melting analysis %) shall conform to the provisions of the table 1
Wt% table 1
| C | Si | Mn | P | S | Cr | Ni | Mo | Nb |
| ≤ 0.15 | 0.10 ～ 0.50 | 1.00 ～ 1.60 | ≤0.025 | ≤0.025 | 0.20 ～ 0.40 | 0.60 ～ 1.00 | 0.20 ～ 0.40 | 0.005 ～0.020 |
3.2,condition of delivery
3.2.1, Hot-rolled state delivery. Sample heat treatment (normalized +tempering)
3.2.2,hot-rolled + high temperature tempering. Sample heat treatment (normalized +tempering)
3.2.3 normalized + high temperature tempering
3.3. mechanical property
3.3.1. Steel plate tensile, charpy impact test should comply with the regulations of the table 2
| thick mm | σsu MPa | σb MPa | δ5 % | AKV |
| ≤100 | ≥390 | 570 ～ 740 | ≥18 | ≥31 |
| ≥100～125 | ≥380 | |||
| ≥125～150 | ≥375 |
Note: 0 ℃ V type impact test allowed a sample is lower than specified value, but may not be less than 70% of the specified value.
Tags: BHW35-87 BHW35 BHW35 steel
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