5130
Data verified5130 is a medium carbon chromium steel for moderately loaded Q&T parts. It offers a hardenability step above 1030/5140-class steels at small sections and is common in Asian bar trade as the SCr430/30Cr equivalent.
Chemical composition
| Element | Content (%) |
|---|---|
| C | 0.28–0.33 |
| Si | 0.15–0.35 |
| Mn | 0.70–0.90 |
| P | ≤0.035 |
| S | ≤0.040 |
| Cr | 0.80–1.10 |
Weight percent, per the governing standard ranges. Actual values per heat are on the mill certificate.
Properties
| Hardness (Q&T) | 26–36 HRC typical |
| Tensile strength | 800–1000 MPa (Q&T, typ.) |
| Density | 7.85 g/cm³ |
Heat treatment
Normalize 870 °C; quench 850 °C oil; temper 500–650 °C.
Equivalent grades
| Standard | Designation |
|---|---|
| din | 28Cr4 type (near) |
| aisi | 5130 |
| jis | SCr430 |
| gb | 30Cr |
Compare side by side: 5130 vs 5140
Equivalents overlap in chemistry and use but are not always identical — see our equivalents guide before substituting in certified designs.
Applications & Processing
Applications: Shafts, gears (moderate), bolts, lever and linkage parts.
Processing: Machines well annealed/normalized; weld with preheat 200–300 °C.
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Ask for a quotationVisit NasteelSource: SAE J404 published ranges · Last updated 2026-11-03. Data is indicative — verify critical values against the governing standard and mill certificate before use.