SGS TUV Hard Chrome Piston Rod , Chrome Plated Round Bar NSS 300 500 800 Hours 45# 42CrMo

45# 42CrMo Piston Hollow Rods Hard Chrome Plated Steel Bar NSS 800 Hours

Material :45# 42CrMo

Color :Black

NSS:Endure 300;500;800hours

Type:Hollow/Solid Rod

Application Environment:At sea or in harsh environments Surface hardness:＞HV860

SURFACE ROUGHNESS:Ra≤0.2 micron and Rt≤2 micro

TOLERANCES ON DIA:ISO f10 on the diameter

LENGTH:MAX 5 meter

Testing Standing une-en iso9227:2017

· Sal solution: 50 (+/- 5) g/l of NaCl. Water is demineralized and salt purity is 99.5%.

· Environmental temperature: 35 °C.

· pH of salt solution is 6.8.

· Volumen of salt solution is 38.4 ml/day.

· Density of salt solution is 1,030 g/cm3.

· Spraying is 1.5 (+/- 0.5) ml/h.

Test Result :NSS can endure 300 hours ;500 hours; 800 hours

In the whole crafts process, there are 2 times remove hardening forces: the first remove hardening force in the heat treatment process, hardening force remove is about 80%; the second remove hardening force in the surface treatment process, hardening force remove is about 90%-95%. Therefore, the piston rod is not easily deformed during use or transportation.

CHEMICAL COMPOSITION

MECHANCIAL PROPERTIES