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BHW35

WYJ011-2002          BHW35

1. Application scope :

this technology conditions apply to more than 100 mm thickness of BHW35 steel plates.

2. The size, shape, weight and allow deviation

2.1 steel plate size deviation should be allowed to meet EN10029 grade C regulations.

2.2 the appearance of the steel plate, weight and deviation should be allowed to meet "thyssen company BHW35-87" rules.

3. Technical requirements

3.1 the chemical composition of the steel plate should be in accordance with table 1

Chart 1       Wt%

 

composition

C

Mn

Si

Cr

Mo

Ni

Nb

P

S

heat analysis

 

≤0.15

1.00~

1.60

0.10~

0.50

0.20~

0.40

0.20~

0.40

0.60~1.00

0.005~

0.020

≤0.025

≤0.025

product analysis

≤0.17

0.90~

1.70

0.10~

0.56

0.15~

0.45

0.15~

0.45

0.60~0.63

0.005~

0.025

≤0.030

≤0.030

 

Note: melting analysis according to the furnace sampling inspection, finished product analysis of steel plate by sampling inspection.

3.2 delivery status: normalized and tempering.

3.3 the mechanical properties of the steel plate and process performance should comply with the provisions of the table 2.

Chart 2

 

σs

MPa

σb

MPa

δ5

0℃AKV

(transverse),J

310℃Gawra

σ0.2,MPa

180℃cold bend

 

d=3.5a

≥390

570~740

≥18

≥31 note(1)

≥343

good condition

 

 

Note: (1) to thetable of impact energy for three samples of the arithmetic mean, allow one of the single value below

Table 2 of the rating, but may not be less than 24 J.

 

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