Certificates
WYJ022-2005 DIWA 353(13MnNiMo54)
1, scope: the rules apply to DIWA 353 (13 MnNiMo54) steel production and inspection (executive standard equivalent to ha pot DIWA 353 purchasing procedures).
2, supply condition: 890 ~ 950 ℃normalized 620 ~ 680 ℃tempering.
3, size, shape and allow deviation
Steel plate size and shape according to the relevant requirements EN10029 tolerance, which according to the thickness tolerance EN10029 grade 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 chemical composition
（％）
|
|
C
|
Si
|
Mn
|
P
|
S
|
Ni
|
Mo
|
Cr
|
Nb
|
Al
|
|
Melting analysis
|
≤0.20
|
0.10～0.50
|
1.00～1.60
|
≤0.020
|
≤0.010
|
0.60～1.00
|
0.20～0.40
|
0.20～0.40
|
0.005～0.020
|
≥0.015
|
|
Product analysis
|
≤0.22
|
0.05～0.56
|
0.95～1.70
|
≤0.025
|
≤0.010
|
0.55～1.05
|
0.15～0.44
|
0.15～0.45
|
0.001～0.025
|
≥0.015
|
5、mechanical proper
Simulating after welding the mechanical properties of the samples after heat treatment (horizontal) should meet the provisions of the table 2.
。
|
thicknese
（mm）
|
yield strength
σ0.2
（Mpa）
|
tensile strength
σb（Mpa）
|
elongation
δ5（%）
|
0℃AKV
J
|
Room temperature impact180°d=3a
|
|
≤100
|
≥390
|
570～740
|
≥18
|
≥31
|
完好
|
|
＞100～120
|
≥380
|
Note: (1) listed in 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) simulation after welding heat treatment process: temperature: 580 ~ 610 ℃, holding time 7 hours. 300 ℃to 150 ℃than cooling speed up/hour, 300 ℃below are welcome.
6, steel plates normalizedand temperingstate of the tensile properties of high temperature should be consistent with the requirements in table 3.
Table 3 Tensile properties of high temperature
|
thick（mm）
|
Test temperature（℃）
|
σ0.2（Mpa）
|
σb（Mpa）
|
|
≤100
|
350
|
≥333
|
≥510
|
|
＞100～120
|
≥324
|
;)
