Certificates

WYJ034-2001                            SHT60

1. The main technical requirements

1.1 brand and chemical composition

Steel grades and chemical composition (melting analysis) should be in accordance with table 1.

Chart 1            wt％

 

Brand	composition  ％
	C	Si	Mn	P	S	Pcm
SHT60	0.08-0.16	0.15-0.55	1.40-2.00	≤0.030	≤0.030	≤0.30

Note: Pcm for welding crack sensitive components, Pcm computation formula is as follows:

Pcm = C + Si / 30 + Mn / 20 + Cu / 20 + Ni / 60 + Cr / 20 + Mo / 15 + V / 10 + 5 B

1.2 the mechanical properties of the steel plate should comply with the provisions in table 2.

Chart 2

 

specification	σsu MPa	σb MPa	δ%	180°bend test （1Sample number） d=Bending diametera＝Sample thickness	-5℃Akv(Longitudinal) J(4 sample)
≥8～20	≥450	590～740	≥15（5Sample number）	d=3a	≥47
＞20～36			≥19（4Sample number）

 

1. The size, shape, weight and allow deviation

The steel plate size and shape, weight and deviation should be allowed to meet the provisions of JIS G 3193. One roughness, bending and cutting skewed sickle shall comply with the following provisions:

2.1 roughness

Roughness shall not be more than 6 mm / 4 m, and 1 m span in more than 3 mm shall not the ripple.

2.2 the sickle bent

Curved sickle shall not be more than 5 mm / 6 m.

2.3 cutting deflection

The cutting should be according to the deflection is shown below, A/W than 1.0%.A is measured, W for mark width.

 

 

 

 

A

W