| Attribute | Value |
|---|---|
| Material Grade | TP347, TP347H, 1.4550, 1.4551 |
| Material Standard | ASTM A213, ASME SA213, JIS G3459, EN10216-5, GOST 9941-81, ASTM A376, ASME SA376 |
| NDT | ET, UT, HT, PT, PMI |
| Size OD | 31.75 ~ 165.2mm |
| Size Thickness | 2~20mm |
| Size Length | Max.: 34m/pc |
Yuhong Group's ASME SA213 TP347H grade stainless steel boiler tubes are specifically designed for power plant applications. These tubes undergo stabilization heat treatment with furnace temperature controlled at approximately 950℃ for 2-4 hours during the final heat treatment process.
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | Niobium | Other |
|---|---|---|---|---|---|---|---|---|---|---|
| TP347 | min: - max: 0.08 | min: 2.0 max: - | min: 1.0 max: - | min: 0.045 max: - | min: 0.03 max: - | min: 17 max: 19 | - | min: 9 max: 13 | 10*C ~1.10 | / |
| TP347H | min: 0.04 max: 0.1 | min: 2.0 max: - | min: 1.0 max: - | min: 0.045 max: - | min: 0.03 max: - | min: 17 max: 19 | - | min: 9 max: 13 | 8*C ~1.10 | / |
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness |
|---|---|---|---|---|
| TP347 | 515 | 205 | 35 | Rockwell B (HRB) max: 90 Brinell (HBW) max: 192 |
| TP347H | 515 | 205 | 35 | Rockwell B (HRB) max: 90 Brinell (HBW) max: 192 |
TP347H has an additional requirement for a grain size of ASTM No 7 or coarser.
