JIS G3462 specifies the alloy boiler steel tubes used for exchanging heat on the inside and outside of the tube, with 8 steel grades from STBA12-STBA26, it has the similar application as JIS G3461, steel tube of this specification could be supplied as U tube. However, it is not applicable to the steel tubes for heating furnace and those for heat exchangers of low temperature service. For final product, heat treatment of the bent portion is not usually performed. However, if there is a request from the orderer, agreement on heat treatment. ANSON is an experienced boiler and pressure steel tube supplier which can offer you JIS G3462 steel tube of all grade and dimension range.
- OD: 6mm-760mm
- WT: 1mm-60mm
- Length: 5-12m or as required
- Application: Boiler pipe, super heater tube, heat exchanger tube.
- Supplementary Technology: plastic pipe cap, hot rolled or cold drawn, tension test, hardness test, flattening test, hydrostatic test,
- Surface: Bared or painted, galvanized or with oiled or client option.
- Delivery state: Hot Rolled, Cold Drawn
- Steel Grade: STBA 12, STBA 13, STBA 20, STBA 22, STBA 23, STBA 24, STBA 25
JIS G3462 Chemical Composition:
| JIS G3462 Grade | C≤ | Si≤ | Mn≤ | P≤ | S≤ | Cr | Mo |
|---|---|---|---|---|---|---|---|
| STBA 12 | 0.10 ~0.20 | 0.10~0.50 | 0.30~0.80 | 0.035 | 0.035 | – | 0.45~0.65 |
| STBA 13 | 0.15~0.25 | 0.10~0.50 | 0.30~0.80 | 0.035 | 0.035 | – | 0.45~0.65 |
| STBA 20 | 0.10 ~0.20 | 0.10~0.50 | 0.30~0.60 | 0.035 | 0.035 | 0.050~0.080 | 0.45~0.65 |
| STBA 22 | 0.15 | 0.50 | 0.30~0.60 | 0.035 | 0.035 | 0.80~1.25 | 0.45~0.65 |
| STBA 23 | 0.15 | 0.50~1.00 | 0.30~0.60 | 0.030 | 0.030 | 1.00~1.50 | 0.45~0.65 |
| STBA 24 | 0.15 | 0.50 | 0.30~0.60 | 0.030 | 0.030 | 1.90~2.60 | 0.87~1.13 |
| STBA 25 | 0.15 | 0.50 | 0.30~0.60 | 0.030 | 0.030 | 4.00~6.00 | 0.45~0.65 |
| STBA 26 | 0.15 | 0.25~1.00 | 0.30~0.60 | 0.030 | 0.030 | 8.00~10.00 | 0.90~1.10 |
JIS G3462 Equivalent Steel Grade:
| KS | ASTM | JIS | DIN | BS | ||||
|---|---|---|---|---|---|---|---|---|
| Grade number | GRADE | Grade number | GRADE | Grade number | GRADE | Grade number | GRADE | Grade number |
| D 3572 | STHA12 | A161 A209 |
T1 T1 |
G 3462 | STBA12 | 17175 | 15Mo 3 | – |
| STHA13 | A209 | T1a | STBA13 | – | – | – | – | |
| STHA20 | A213 | T2 | STBA20 | – | – | – | – | |
| STHA22 | A213 | T12 | STBA22 | 17175 | 13Cr Mo 44 | 3059 | S1 620 S2 620 ERW620 CEW620 |
|
| STHA23 | A199 A200 A213 |
T11 T11 T11 |
STBA23 | – | – | – | – | |
| STHA24 | A199 A200 A213 |
T22 T22 T22 |
STBA24 | 17175 | 10Cr Mo910 | 3059 | S1 622-440 S2 622-440 |
|
| STHA25 | A199 A200 A210 |
T5 T5 T5 |
STBA25 | – | – | – | – | |
| STHA26 | A199 A200 A213 |
T9 T9 T9 |
STBA26 | – | – | – | – | |
HENGTONG can supply JIS G3462 steel tube from stock or from reputed steel mills. We also offer steel fabrication service where steel plates can go through processings like cutting, welding, bending, machining, pre-coating, pre-lined, beveling, or as you require. Our steel mills have fabricating employees that have 5-10 years of working experience. If you are interested in buying JIS G3462 steel tube products, contact us now for the latest price or check the following table for equivalent steel grade of JIS G3462.
JIS G3462 Mechanical Property:
| JIS G3462 Grade | Tensile Property (N/mm2) | Yield Point or Yield Strength (N/mm2) | Elongation (%) | ||
|---|---|---|---|---|---|
| OD ≥ 20 mm | 10 mm ≤ OD ＜20 mm | OD ＜10 mm | |||
| NO. 12 Sample | NO. 11 Sample | NO. 11 Sample | |||
| Longitudinal | Transverse | Transverse | |||
| STBA12 | ≥ 382 | ≥ 206 | ≥ 30 | ≥ 25 | ≥ 22 |
| STBA13 | ≥ 412 | ≥ 206 | ≥ 30 | ≥ 25 | ≥ 22 |
| STBA20 | ≥ 412 | ≥ 206 | ≥ 30 | ≥ 25 | ≥ 22 |
| STBA22 | ≥ 412 | ≥ 206 | ≥ 30 | ≥ 25 | ≥ 22 |
| STBA23 | ≥ 412 | ≥ 206 | ≥ 30 | ≥ 25 | ≥ 22 |
| STBA24 | ≥ 412 | ≥ 206 | ≥ 30 | ≥ 25 | ≥ 22 |
| STBA25 | ≥ 412 | ≥ 206 | ≥ 30 | ≥ 25 | ≥ 22 |
| STBA26 | ≥ 412 | ≥ 206 | ≥ 30 | ≥ 25 | ≥ 22 |
JIS G3462 Heat treatment:
| Symbol of class | JIS G3462 Heat treatment |
|---|---|
| STBA 12 STBA 13 |
Low temperature annealing, isothermal annealing, full annealing, normalizing or normalizing followed by tempering |
| STBA 20 STBA 22 |
Low temperature annealing, isothermal annealing, full annealing, normalizing or normalizing followed by tempering |
| STBA 23 STBA 24 STBA 25 STBA 26 |
Isothermal annealing, full annealing or normalizing followed by tempering |
