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