JIS G3472 ERW Tubes,This Japanese Industrial Standard Specifies the electric resistance welded (ERW) carbon steel tubes used for automobiles.
1.Standard: JIS G3472
2.OD:10-650mm
3.WT:1-80mm
4.Length:5-24m random or be fixed as customers' requests
Grade and Designation:
Grade | Designation | Reference Traditional symbol | Remark |
Grade G | STAM 290GA | STAM 30GA | Tubes used for general parts of automobile structures |
STAM 290GB | STAM 30GB | ||
STAM 340G | STAM 35G | ||
STAM 390G | STAM 40G | ||
STAM 440G | STAM 45G | ||
STAM 470G | STAM 48G | ||
STAM 500G | STAM 51G | ||
Grade H | STAM 440H | STAM 45H | Tubes used for, among parts of automobile structures, those of which yield strength is particularly |
STAM 470H | STAM 48H | ||
STAM 500H | STAM 51H | ||
STAM 540H | STAM 55H |
Chemical composition
Designation | Chemical Composition % | ||||
C | Si | Mn | P | S | |
STAM 290GA | 0.12 max. | 0.35max. | 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 | 0.25 max. | 0.35 max. | 0.30-0.90 | 0.035 max. | 0.035 max. |
STAM 440H | |||||
STAM 470G | 0.25 max. | 0.35 max. | 0.30-0.90 | 0.035 max. | 0.035 max. |
STAM 470H | |||||
STAM 500G | 0.30 max. | 0.35 max. | 0.30-1.00 | 0.035 max. | 0.035 max. |
STAM 500H | |||||
STAM 540H | 0.30 max. | 0.35 max. | 0.30-1.00 | 0.035 max. | 0.035 max. |
Applications:
JIS G3472 ERW Tubes for Automobile Structural Purpose ,Gas spring, Shock absorber, Cylinder and other high precision area.
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