Hydraulic Piston Rod 1.Material:SAE1045 2.Surface:Hard Chromed 3.Surface roughness:Ra0.1/Rz0.2~0.4

Part Name	Piston Rod
Material	According to user requirements(SAE1035/SAE1045/SAE5140)
Specifications	Φ4 ~ Φ40
Length	30-1000
Straightness	0.02x250
Roundness	≤ 0.005
Cylindricity	≤ 0.01
Concentricity	≤ 0.04
Machining accuracy	ISO 2768-1-f
Surface roughness	Rz0.2~0.4 / Ra≤0.1
Induction hardness	HRC45~HRC55
Case depth	0.6~1.0
Core hardness	HB200~240
Availability status	Chromed/QPQ
Thickness of chromed	According to user requirements(5~40um)
Hardness	900Hv(100gm)
Cracks	30 ~ 60/mm
Salt spray	48hrs no.9

Chemical Composition	CK35	CK45
C	0.32~0.39%	0.42~0.50%
Mn	0.50~0.80%	0.50~0.80%
Si	0.17~0.37%	0.17~0.37%
Cr	0.25% Max	0.25% Max
Ni	0.30% Max	0.30% Max
Cu	0.25% Max	0.25% Max
Mechanical Properties	CK35	CK45
Tensile Strength	530MPa	600MPa
Yield Strength	315MPa	355MPa
Elongation	20%	16%
Standard Charpy Impact Strength	55J	39J
Core Hardness	197HBS	229HBS

Mechanical Properties After Cold Drawn	CK35	CK45
Tensile Strength	630-860MPa	900MPa Max
Yield Strength	520 MPa Min	650MPa Min
Elongation	7% Min	10% Min
Standard Charpy Impact Strength	15J Min	15J Min
Core Hardness	200-240BHN	200-240BHN
Ratio	0.92 Max	0.92 Max

hydraulic piston rod