Certificates

WYJ029-2006                      13MnNiMo54(DIWA 353 )

1. The range: the rules apply to thickness≤150 mm 13 MnNiMo54 (DIWA 353) steel production and inspection.

2. The supply condition: 890 ~ 950 ℃normalized + 620 ~ 680 ℃tempering.

3. The size of the steel plate, appearance, weight, allow deviation

The steel plate size and shape according to the relevant requirements EN10029 tolerance, which according to the thickness tolerance EN10029 grade B, straightness tolerance EN10029 according to the class B, straightness press N level.

4. The chemical composition of the steel plate should be consistent with the requirements of the table 1.

Table 1

 

composition	C	Si	Mn	P	S	Cr	Mo	Ni	Al	Nb
Melting analysis	≤0.15	0.10-0.50	1.00-1.60	≤0。020	≤0。010	0.20-0.40	0.20-0.40	0.60-1.00	≥0.015	0.005-0.020
Product analysis	≤0.17	0.05-0.56	0.95-1.70	≤0。025	≤0。015	0.15-0.45	0.15-0.44	0.55-1.05	≥0.015	0.001-0.025

5.mechanical property

Steel normalized  + tempering the mechanical properties of the (horizontal) should meet the provisions of the table 2。

Table 2

 

Product thickness，mm	yield strength σ0.2MPa	tensile strength σb MPa	δ5	20℃Akv J	cold bend  180°  d=3a
≤100	≥390	570-740	≥18	≥39	good condition
＞100-125	≥380
＞125-150	≥375

Note: (1) listedin the table impact value for the average of the three specimens, allow a impact value less than rating, but they should not be below and J.

(2) according to the provisions of the talks, sample by simulation welding heat treatment, simulation of properties of the heat treatment after welding shall meet table 2 regulations.

6. Steel plate can be according to provisions of the tensile properties of high temperature inspection talks, temperature clearly in the contract, the results should be in accordance with table 3 requirements.

Table 3

 

thickness ，mm	Under different temperatureσ0.2（Mpa）minimum
	100	200	250	300	350	400
≤50	393	378	373	363	353	309
＞50-≤100	373	358	353	343	333	304
＞100-≤125	363	348	343	333	324	299
＞125-≤150	353	338	333	324	314	294
through thickness σb（Mpa）	535	520	515	515	510	490