Certificates

WYJ002-2005                                 A48CPr

1. The brand: materials for the NFA grades of 36-205-82 A48CPR.

2. The size, shape, weight and allow deviation

2.1 the thickness of the steel plate deviation should be allowed to meet the EN10029 grade C-1991 in regulations.

2.2 steel plate should be consistent with the straightness EN10029-1991 in ordinary straightness N levels of regulations.

2.3 other should comply with the provisions of the EN10029-1991.

3. Technical requirements

3.1 chemical composition (%)

Steel plate chemical composition (melting analysis, %) should be in accordance with table 1.

Table 1

 

C	Si	Mn	P	S	Mo	Cr	Ni	Cu	Nb*	V*
≤0.20	≤0.55	1.00～1.60	≤0.025	≤0.015	≤0.10	≤0.25	≤0.30	≤0.30	≤0.015	≤0.020

Note: but thickness more than 25 mm,Nb≤0.040％，V≤0.050％

3.2 delivery status:normalized

3.3 mechanical properties and process performance

3.3.1normalized sampledoing simulation thick welding heat treatment, sample simulation welding heat treatment under the condition of the thick mechanical performance and process performance should comply with the provisions of the table 2.

Table 2

 

Tensile testing atroom temperature
The yield strength minimum valueRp0.2  MPa					tensile strength Rm  MPa	elongation ，A，％ L0＝5.65√S0  minimum value
t≤30	t＞30--50	t＞50-80		t＞80-100	470～560	t≤30	t＞30--50	t＞50-110
285	265	265		255		23	22	21
0℃，Akv，J，transverse					180° cold impact test	High temperature tensile yield strengthRp0.2，MPa
Three sample average			single sample value		d＝2a，good conditionaFor the specimen thickness	300℃
≥31			≥23			≥196

Note: 1) the tensile strength of the upper limit value reference EN10028-2 standard P295GH brand, the maximum can for 580 MPa.

2) tensile, bending test, sample for transverse, t for the thickness of the steel plate handled.

3) for more than 50 mm thickness of plates in the high temperature tensile test. Sample testing temperature heat preservation in 5 minutes, high yield strength value according to table 2 rules, if more than 5 minutes heat preservation, high temperature yield strength value according to NFA36-205, may reduce to20 MPa.