314
Data verified314 is a heat-resistant grade like 310 but with silicon raised to 1.50–3.00% for still better scaling resistance in cyclic high-temperature service. It is a speciality grade, stocked far less widely than 310S.
Chemical composition
| Element | Content (%) |
|---|---|
| C | ≤0.25 |
| Si | 1.50–3.00 |
| Mn | ≤2.00 |
| P | ≤0.045 |
| S | ≤0.030 |
| Cr | 23.00–26.00 |
| Ni | 19.00–22.00 |
Weight percent, per the governing standard ranges. Actual values per heat are on the mill certificate.
Properties
| Delivery condition | Annealed |
| Hardness | ≤217 HB (annealed) |
| Tensile strength | 515–690 MPa |
| Density | 7.90 g/cm³ |
| Max scaling temperature | ~1035 °C continuous |
Heat treatment
Solution anneal 1030–1150 °C, rapid cool.
Equivalent grades
| Standard | Designation |
|---|---|
| aisi | 314 |
| jis | SUS314 |
Compare side by side: 314 vs 310 · 314 vs 310S
Equivalents overlap in chemistry and use but are not always identical — see our equivalents guide before substituting in certified designs.
Applications & Processing
Applications: Furnace conveyor parts, radiant tube hangers, burner nozzles, glass-industry tools, high-temperature fixtures.
Processing: Higher silicon makes welding and hot working less forgiving than 310S; machining is slow, with strong work hardening.
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Ask for a quotationVisit NasteelSource: ASTM A240 / A276 published ranges · Last updated 2026-11-03. Data is indicative — verify critical values against the governing standard and mill certificate before use.