久久久无码精品亚洲A片0000,97午夜久久精品理论电影,久久精品视在线-2,久久国产精品福利影集,久久影视精品,亚洲精品成a人在线观看,久久视频在线播放,最新国产精品大全高清版,97SE亚洲精品一区,91视频国产一区

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.