Piston Rod

PISTON ROD Steel grade:45# /DIN CK45 /JIS 45C/SAE 1045/SAE 10V45/ST52/20MnV6/42CrMo4/40Cr Diameter:6~300mm Length:3~9m Tolerance:ISO f7 Chrome thickness:20μm(min) Hardness of the chrome layer:850HV(min) Roughness:Ra 0.2μm(max) Straightness:0.2/1000mm Yield Strength:≥320 Mpa   Tensile Strength:≥580 Mpa  Elongation:≥ 15% Supply condition:1.Hard chrome plated                               2.Induction hardened                              3.Quenched & Tempered                              4.Induction hardened with Q&T Chemical Composition(%) Material C% Mn% Si% S% P% V% Cr% CK45 0.42-0.50 0.50-0.80 0.04 0.035 0.035     ST52 0.22 1.6 0.55 0.035 0.04     20MnV6 0.16-0.22 1.30-1.70 0.10-0.50 0.035 0.035 0.10-0.20   42CrMo4 0.38-0.45 0.60-0.90 0.15-0.40 0.03 0.03   0.90-1.20 40Cr 0.37-0.45 0.50-0.80 0.17-0.37       0.80-1.10   Mechanical Properties Material T.S N/MM2 Y.S N/MM2 E%(MIN) CHARPY CONDITION CK45 610 355 15 >41J NORMALIZE CK45 800 630 20 >41J Q+T ST52 500 355 22   NORMALIZE 20MnV6 750 590 12 >40J NORMALIZE 42CrMo4 980 850 14 >47J Q+T 40Cr 1000 800 10   Q+T