15CrMoG
Data under review15CrMoG is China’s 1Cr-0.5Mo heat-resistant steel for boiler tube (GB/T 5310) and vessel plate, the domestic counterpart of 13CrMo4-5. It serves superheaters, headers and hot pressure parts to about 550 °C.
Chemical composition
| Element | Content (%) |
|---|---|
| C | 0.12–0.18 |
| Si | 0.15–0.40 |
| Mn | 0.40–0.70 |
| P | ≤0.025 |
| S | ≤0.015 |
| Cr | 0.80–1.10 |
| Mo | 0.40–0.55 |
Weight percent, per the governing standard ranges. Actual values per heat are on the mill certificate.
Properties
| Yield strength | ≥295 MPa (plate) |
| Tensile strength | 440–640 MPa |
| Service temperature | to ~550 °C |
| Density | 7.85 g/cm³ |
Heat treatment
Supplied normalized and tempered.
Equivalent grades
| Standard | Designation |
|---|---|
| din | 13CrMo4-5 (near) |
| aisi | A387 Gr.12 (near) / A335 P12 tube |
| jis | SCMV3 (near) |
| gb | 15CrMoG (GB/T 5310 tube; GB/T 713 plate) |
Compare side by side: 15CrMoG vs 13CrMo4-5
Equivalents overlap in chemistry and use but are not always identical — see our equivalents guide before substituting in certified designs.
Applications & Processing
Applications: Boiler tubes and headers, hot vessels, petrochemical heat exchangers.
Processing: Weld with Cr-Mo consumables, preheat and PWHT; tube bends are normalized and tempered after forming.
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Ask for a quotationVisit NasteelSource: GB/T 5310 / GB/T 713 published ranges · Last updated 2026-11-03. Data is indicative — verify critical values against the governing standard and mill certificate before use.