Non Quenched And Tempered Chrome Plated Steel Rod With Stable Mechanical Properties


Product Description
1. The mechanical properties of micro alloy steel rod is the same as or over than quenched and tempered
42CrMo, 40Cr and CK45, and is very uniform of the whole cross section.
2. Hardness of micro alloy steel rod is more uniform than quenched and tempered 42CrMo, 40Cr and
CK45.
3. The turning performance of non-quenched and tempered steel rod is commensurate or superior to
42CrMo, 40Cr and CK45
4. The processing period is shortened, and the productivity is enhanced and the occupied capital is
reduced.
5. Production no quenched and tempered process can greatly save the energy consumption.
6. 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 .SURFACE HARDNESS
850-1150HV (vickers 100g)
8.OVALITY
Half of the tolerance ISO f7
9. SURFACE ROUGHNESS
Ra≤0.2 micron and Rt≤2 micron

10. STRAIGHTNESS
≤0.2MM/M
11. CORROSION RESISTANCE
Test in natural salt spray according to ASTM B 117-120hours
Results evaluation according to ISO 4540 RATING 7-10

12. WELDABILITY
Good

13. COHESION

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

and cooling in water)

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