1025
Data verified1025 is a low-medium carbon steel for general machinery parts that need a step up in strength from 1020 while keeping good weldability and formability. It is a common forging grade for lightly loaded components.
Chemical composition
| Element | Content (%) |
|---|---|
| C | 0.22–0.28 |
| Mn | 0.30–0.60 |
| P | ≤0.040 |
| S | ≤0.050 |
Weight percent, per the governing standard ranges. Actual values per heat are on the mill certificate.
Properties
| Tensile strength | 430–520 MPa (normalized, typ.) |
| Density | 7.85 g/cm³ |
| Weldability | Good |
Heat treatment
Normalize 870–900 °C; limited quench response — water quench small sections only.
Equivalent grades
| Standard | Designation |
|---|---|
| din | 1.0406 (C25) |
| aisi | 1025 |
| jis | S25C |
| gb | 25 |
Compare side by side: 1025 vs 1030 · 1025 vs SAE 1020
Equivalents overlap in chemistry and use but are not always identical — see our equivalents guide before substituting in certified designs.
Applications & Processing
Applications: Forged fittings, levers, small shafts, agricultural parts, coupling components.
Processing: Machines well normalized; welds readily with modest preheat on thick sections.
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Ask for a quotationVisit NasteelSource: SAE J403 published ranges · Last updated 2026-11-03. Data is indicative — verify critical values against the governing standard and mill certificate before use.