HY4700 Micro Alloy Steel Grades Chrome Rod For Hydraulic Cylinder

HY4700 Micro Alloy Steel Grades Chrome Rod For Hydraulic Cylinder


Product Description
1. The micro alloy steel products are developed on the basis of the proprietary technology of the control
rolling and cooling for substituting quenched and tempered 42CrMo4, 40Cr and CK45 with a variety of
mechanical performance requirements.
2. It is mainly used in mechanical manufacturing for the directly turning part of shaft and rod, etc
3. the mechanical property is correspond to quenched and tempered 42CrMo4, 40Cr and CK45 or over
them and very uniform on the whole cross section.
4. Turning performance: Turning performance is commensurate to 42CrMo4, 40Cr and CK45 or be
superior to them.
5. Hardness: Hardness is more uniform on the whole cross section than quenched and tempered
42CrMo4, 40Cr and CK45
6. Micro structure: Ferrite and pearlite with fine and uniform grain size.


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. SURFACE ROUGHNESS
Ra≤0.2 micron and Rt≤2 micron
7. TOLERANCES ON DIA
ISO f7 on the diameter
8.OVALITY
Half of the tolerance ISO f7
9. STRAIGHTNESS
≤0.2MM/M
10 .SURFACE HARDNESS
850-1150HV (vickers 100g)
11. COHESION

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

and cooling in water)
12 .POROSITY
Test according to ISO 1456/1458 and result yaluation according to ISO 4540 rating 8-10
13. WELDABILITY
Good
14. CORROSION RESISTANCE
Test in natural salt spray according to ASTM B 117-120hours
Results evaluation according to ISO 4540 RATING 7-10
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.