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JIS G3472 Carbon Steel Tube For Automobile

Release Tme: 2024-04-07
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JIS G3472 Carbon steel pipes for automotive structures are used for rotor shafts, fluid lines, drive shafts, steering gears, seat belt tensioners, and airbag generator sleeves.

JIS G3472 ERW Tube Specification:

Grade: STAM 290GB, STAM 390G, STAM 440G, STAM 470G
OD: 15.9-101.6mm
WT: 1.0-6.0mm
Length: 3000 - 9000mm

JIS G3472 ERW automobile structure steel tube Chemical Composition Table:

Grade

Chemical Composition %

C

Si

Mn

P

S

STAM 290GA

0.12 max.

0.35 max.

0.60 max.

0.035 max.

0.035 max.

STAM 290GB

STAM 340G

0.20 max.

0.35 max.

0.60 max.

0.035 max.

0.035 max.

STAM 390G

0.25 max.

0.35 max.

0.30~0.90

0.035 max.

0.035 max.

STAM 440G

STAM 440H

STAM 470G

STAM 470H

STAM 500G

0.30 max.

0.35 max.

0.30~1.00

0.035 max.

0.035 max.

STAM 500H

STAM 540H

JIS G3472 ERW automobile structure steel tube Mechanical Properties Table:

Grade

Designation

Tensile strength

(MPa)

Yield Strength
(MPa)

Elongation (1)%

Flaring test (2)

No.11 Test piece No.12 Test piece

Size of the flared bell portion

(D: OD)

Longitudinal direction

Grade G

STAM 290GA

290 min.

175 min.

40 min.

1.25 D

STAM 290GB

290 min. 175 min. 35 min. 1.20 D

STAM 340G

340 min.

195 min.

35 min.

1.20 D

STAM 390G

390 min.

235 min.

30 min.

1.20 D

STAM 440G

440 min.

305 min.

25 min.

1.15 D

STAM 470G

470 min. 325 min. 22 min. 1.15 D

STAM 500G

500 min.

355 min.

18 min.

1.15 D
Grade H

STAM 440H

440 min.

355 min.

20 min.

1.15 D

STAM 470H

470 min.

410 min.

18 min.

1.10 D

STAM 500H

500 min. 430 min. 16 min. 1.10 D

STAM 540H

540 min.

480 min.

13 min.

1.05 D

JIS G3472 Carbon Steel Tube For Automobile

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