热99re久久精品精品免费,人人操人人爽天天干,国内精品久久久精品影院色老大,国产精品亚洲综合久久婷婷,天天色天天操天天天,亚洲一区二区三区天海翼,一区二区三区免费在线,精品乱人伦一区二区三区,国产精品久久久久影视

Products

products

JF lead series

  • parameters

JF series materials, also known as bimetallic materials or copper lead steel strips, are made of low carbon steel or steel coil as the base material, and the surface is sintered with copper alloy steel and copper alloy products. Different copper alloy materials are suitable for different working conditions. The surface copper alloy grades can be divided into high lead series, lead series and lead-free series.


Alloy gradeNameMain chemical composition%Alloy hardness HBSteel layer hardness HBMain use occasion


cupbsnznniBi


CuPb10Sn10JF800margin9.0~11.09.0~11.050~12080~150Bushing, side plate, washer
CuPb3Zn6Sn6JF850margin2.0~4.05.0~7.05.0~7.040~8090~120
CuPb7Sn7Zn3JF830margin6.0~8.06.0~8.02.0~4.060~9080~130


1、The 10-10 materials in the above table are tested by the Wuhan Institute of Materials Protection, Ministry of Machinery Industry. The measured fatigue strength of the Glacier.vandere11 sapphire bearing fatigue tester in the UK is greater than 125Mpa.

2、“—”is not detected.