42CrMo4 , 40Cr Chrome Piston Bar Quenched Tempered High Strength

42CrMo4 , 40Cr Chrome Piston Bar Quenched Tempered High Strength

Product Description

Piston Rod
Size: Ø 6-300mm
Length: 1m -8m
Material: ck45,42CrMo4,40Cr
Tolerance: ISO f7
Chrome thickness: 20~30micron
Hardness of the chrome layer: 850HV(min)
Roughness: Ra 0.2micron (max)
Straightness: 0.2/1000mm
Mechanical properties: (CK45/JIS 45C)
Yield Strength ≥320 Mpa
Tensile Strength ≥580 Mpa
Elongation ≥ 15%

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

Mechancial 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

COHESION
No cracks,breaking or detaching after thermic shock(warming up at 300 celsius degrees and cooling
in water)
POROSITY
Test according to ISO 1456/1458 and result yaluation according to ISO 4540 rating 8-10
CORROSION RESISTANCE
Test in natural salt spray according to ASTM B 117-72hours
Results evaluation according to ISO 4540 RATING 7-10
WELDABILITY
Good
PACKING
Anti rust oil to be applied on material and each rod to be packed in paper sleeve
CERTIFICATE
All certificate related with material heat treatment and plating is required

Jiangsu New Heyi is specialized in hydraulic piston rod with an experience of 16 years on research and machining technology. There are more than 200 employees, including 22 technical engineers, 10 researchers and one Senior technicians. Through technical innovation and exquisite machining process, our products have played the leading role at home and aboard many years.

Jiangsu New Heyi Machinery Co., Ltd is specialized in producing precision long small diameter axes and  hydraulic piston rod. The products are widely used in mine machinery industry, textile and printing machinery industry and so on. Hydraulic cylinder piston rods are also supplied as the OEM parts for  many large and medium enterprises, such as Heli Forklift Ltd, Hangzhou Forklift Ltd, Sanyi Heavy Industry Ltd.  We have enjoyed a good reputation with high quality and good after-sale service in recent years.  Also our products are exported to USA, Canada, Southeast Asia, Austria, Australia and Brazil etc.

We have set up the principle of “high quality, good reputation”, carried out a series of rigorous quality 

management system, and have already passed the ISO9001:2008 international quality system. Our inspection 

apparatus and production equipment are advanced and superior, that ensure the product of high quality.

We have complete piston rod manufactured equipment covering all processes. The critical processes of heat 

treatment and chrome plating are finished in our own company, which ensure the quality control of the key 

technical requirements.

Our factory is located in Wuxi which is famous for the peaches. The transportation is very convenient, only 

30 minutes to Wuxi Airport and railway station. About 1 kilometer from the entrance of the expressway access 

to Shanghai. The factory covers an area of about 25000 square meters and has more than 200 employees, 

among which more than 20 are technical engineers.