• WQ590E/WH70Q

Certificates

WYJ049-2006                  WQ590E(WH70Q)

1. applicable scope

Thetechnology conditions used in the WQ590E less than 80 mm thickness (WH70Q) steel plates

2. The size, shape, weight and allow deviation

The steel plate size and shape, weight and deviation should be allowed to meet the provisions of GB/T709.

4. Mechanical properties in table 2

Table 2 mechanical property

 

 

specificationmm

ReH MPa

Rm MPa

A %

Lo=50mm

Akv(longitudinal )average value

temperature

J

≤40

≥590

≥690

≥17

-20℃

≥27

>40~80

≥570

-40℃

Provide measured value

5.Delivery status: quenching and temperingdelivery

6Inspection rules

6.1Steel should be driven a rolling test mechanical properties and process performance。

6.2Test method: each batch of steel, the inspection items, sampling number, sampling method and test methods in accordance with table 3 rules.table3

 

number

inspection item

Sampling number()

sampling method

test method

1

chemical analysis

1(Each tank furnace,)

GB/T222

GB223

2

stretching

1

GB/T2975

GB228

3

cold bend

1

GB/T232

4

impact

3

GB/T229

5

ultrasonic examination

Each piece

/

JB4730

 

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