Certificates

WYJ060-2006                      14CrMoR、15 CrMoR

1. applicable scope:

The technology conditions only apply to ≤100 mm thickness of the hydrogen and ≤50 mm thickness of the hydrogen 15 CrMoR steel production and inspection.

2. The reference standard (slightly)

3. The size, shape, weight and deviation should be allowed to meet the provisions of GB6654-1996 standard.

4. Mechanical properties

 

Steel grade	Thick mm	Reor Rp0.2 MPa	Rm MPa	A %	Transverse impact energyJ	Cold bend 180° b=2a
Hydrogen15 CrMoR	≤50	≥295	450~590	≥19	temperature：0℃ Average value≥54 Signal value≥47	d＝3a
Hydrogen14 CrMoR	≤100	≥310	515~690	≥19	temperature：-10℃ Average value≥54 Signal value ≥47	d＝3a

 

The steel plate impact performance: impact do not conform to the provisions of the above, can retest . With a same steel plate should be taken another 3 samples again on sample inspection, before and after six samples shall meet the average rating, allowing two sample less than 54 J, but less than 47 J samples were allowed only one.

4.1 Steel plate after simulation of heat treatment after welding after high temperature tensile test shouldindicated in the contract.

4.2Steel plate grain degrees：≥6 grade

4.3Steel plate inclusions：A＋C≤3.0，B +D≤3.0且A＋B +C+D≤5.5

4.4Hardness of the steel plate：Steel plate delivery statushardness≤240HB