Certificates

WYJ042-2006                              SA387Gr11CL2

1. Applicable scope

The technology conditions apply to SA387Gr22CL2 steel plate with the hydrogen production and inspection.

2. The steel plate size and shape, weight, allow deviation and surface quality should be consistent with the provisions of GB6654 standard.

3. 3. Chemical composition

The chemical composition of the steel plate with the provisions of the table 1.

Table 1

 

composition

C

Si

Mn

P

S

Cr

Mo

Ni

Cu

Al

Sb*

Sn*

As*

「H」*

Heating analysis

－0.05－0.17

0.50－0.60

0.40－0.65

≤0.010

≤0.015

1.00－1.50

0.45－0.65

≤0.20

≤0.20

≥0.020

≤0.003

≤0.015

≤0.016

≤2ppm

Product analysis

0.04－0.17

0.44－0.65

0.35－0.73

≤0.010

≤0.015

1.00－1.56

0.40－0.70

≤0.25

≤0.20

≥0.020

≤0.003

≤0.015

≤0.016

≤2ppm

note：（1）(Si+Mn)≤1.30

* residual trace element analysis results do only records, does not make the acceptance conditions   （2）X=(10P+5Sb+4Sn+As)×10^-2≤15ppm

   （3）(Cu+Sn+As) ×10^-2≤15

In Above formulate Si  Mn  P  Sb  Sn  As  Cu For the percentage content of each element

4. Delivery status: the steel plate to normalizing + tempering state delivery.

5 mechanical properties

The mechanical properties of the steel plate should comply with the provisions of the table 2 (sample for simulation of heat treatment after welding state)

Table 2

 

Rm(MPa)	RP0.2(MPa)	A(%)	Z(%)	475℃Gaura RP0.2(MPa)	cold bend inspection B=2a	-30℃charpy impact test energy，J	HB
520-685	≥310	≥19	≥40	≥217	D=3a	≥55 average value ≥48signal value	≥220

Note A：Impact test, shall be recorded lateral expansion value and fibrous fracture percentage for reference。