Certificates

BHW35-87                       BHW35

1,Applicable scope

      1.1the 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 testshould comply with the regulations of the table 2

 

thick mm	σsu MPa	σb MPa	δ5 %	AKV transverse0℃（J）
≤100	≥390	570 ～ 740	≥18	≥31
≥100～125	≥380
≥125～150	≥375

Note: 0 ℃V type impact test  allowed  a sample is lowerthan specified value, but may not be less than 70% of the specified value.