欧洲午夜福利视频在线观看,老司机电影网你懂的,再深点灬舒服灬太大了O,无码激情做A爰片毛片A片小说,亚洲精品久久久久中文另类,大尺度激情做爰A片纯真时代,天天看片AV色综合,日本精品巨爆乳无码大乳巨H,日日噜噜夜夜爽爽,人人爽久久久噜噜噜婷婷

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.