35mm - 140mm Micro Alloyed Steel Rod Tensile Strength Not Less Than 750mpa


Product Description
1. Turning performance: Turning performance is commensurate to 42CrMo4, 40Cr and CK45 or be
superior to them.
2. Hardness: Hardness is more uniform on the whole cross section than quenched and tempered
42CrMo4, 40Cr and CK45
3. Micro struction: Ferrite and pearlite with fine and uniform grain size.
4. The steel directly directly turning saves the logistics cost
5. Energy conservation: Production no quenched and tempered process greatly saves the energy
consumption.
6. Environments protection: Production no quenched and tempered process meets the requirements of
environmental protection.

Detailed Description

1. MATERIAL: HY4700, HY4520

2. CHEMICAL COMPOSITION(%)

3. MECHANICAL PROPERTIES

4. SUPPLY CONDITION
Ground and chrome plated
5. CHROME THICKNESS
20 to 30 micron
6. TOLERANCES ON DIA
ISO f7 on the diameter
7.OVALITY
Half of the tolerance ISO f7
8 .SURFACE HARDNESS
850-1150HV (vickers 100g)
9. SURFACE ROUGHNESS
Ra≤0.2 micron and Rt≤2 micron
10. STRAIGHTNESS
≤0.2MM/M
11. COHESION

No craks,breaking or detaching after thermic shock(warming up at 300 celsius degrees

and cooling in water)
12. WELDABILITY
Good
13. CORROSION RESISTANCE
Test in natural salt spray according to ASTM B 117-120hours
Results evaluation according to ISO 4540 RATING 7-10

14 .POROSITY
Test according to ISO 1456/1458 and result yaluation according to ISO 4540 rating 8-10
15. PACKING
Anti rust oil to be applied on material and each rod to be packed in paper sleeve
16. CERTIFICATE
All certificate related with material heat treatment and plating is required

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.