Certificates

WYJ055-2006                       A709M-HPS 485W

1, applicable scope

 The technology conditions apply to no more than 100 mm thickness of A709M-HPS 485 W high strength steel bridge g syndrome of resistance.

2, size, shape, weight and allow deviation

The steel plate size and shape, weight and deviation should be allowed to meet ASTM A6 / A6M rules.

3, chemical composition (melting analysis)

The chemical composition of steel (melting analysis) should be in accordance with table 1.

 

Table 1    wt%

 

Steel grade

C

Si

Mn

P

S

Ni

Cr

Mo

V

Cu

Al

N

A709M-HPS 485W

≤ 0.11

0.30 0.50

1.10 1.35

≤ 0.020

≤ 0.006

0.25 0.40

0.45 0.70

0.02 0.08

0.04 0.08

0.25 0.40

0.010 0.040

≤ 0.015

4、mechanical property

The mechanical properties of the steel plate test results should comply with the provisions of thetable 2table 2      mechanical property

 

specification （mm）	Rp0.2   （MPa）	Rm （MPa）	A （landscape ，50mm，%）	Akv （-23℃，lengthways ，J）	ψz （％）
8-100	≥485	585-760	≥17	≥34（average）	≥25（average）

Note: according to need additional Z to performance requirements, Z to performance should comply with the GB5313-85 Z25 regulation, specific specifications and number in indicated in the contract.

5, manufacturing process and delivery status

5.1 steel should be calm steel, in line with the A6 / A6M austenitic grain size requirement;

5.2 the liquid steel must be vacuum processing;

5.3 steel plate to the tempering state delivery.