Structural Steel
S235JR · 1.0038
Also known as St37-2 / SS400 / A283-C
General-purpose structural steel for frames, bars and profiles.
S235JR (material 1.0038, formerly St37-2) is a general-purpose low-carbon structural steel with a minimum yield of 235 MPa, good weldability and formability. It is the default grade for general steelwork, supplied as bars, angles, merchant sections, plate and sheet — including cold-drawn (bright) bar.
International equivalents.
The same steel by country and standard — near matches; mill certificate governs.
Chemical composition.
Indicative, % by weight per EN 10025-2. Mill certificate governs.
| Element | % |
|---|---|
| C | ≤ 0.17 |
| Mn | ≤ 1.40 |
| P | ≤ 0.035 |
| S | ≤ 0.035 |
| N | ≤ 0.012 |
| Cu | ≤ 0.55 |
Mechanical properties.
Indicative values for a reference section and heat-treatment condition. Actual properties vary with dimension and treatment, and are confirmed on the mill certificate.
Available forms.
Size: Bars Ø 8–250 mm · profiles per section · flats, plates & sheet to specification
Typical applications.
- General steel structures
- Frames & supports
- General fabrication
- Construction
FAQ.
What is S235JR?
S235JR (material 1.0038, formerly St37-2) is a general-purpose low-carbon structural steel with a minimum yield of 235 MPa, good weldability and formability. It is the default grade for general steelwork, supplied as bars, angles, merchant sections, plate and sheet — including cold-drawn (bright) bar.
Is S235JR the same as St37-2?
Yes — S235JR and St37-2, SS400, A283-C are matching designations for the same steel across different standards (EN, AISI/SAE, JIS, GB, former DIN). They are near equivalents and may differ slightly in chemistry, so the mill certificate governs the exact specification.
What are the international equivalents of S235JR?
S235JR corresponds to S235JR (1.0038) (EN), St37-2 (former DIN), A283 Gr.C (near) (ASTM), SS400 (near) (JIS), Q235 (GB). Equivalents are nearest matches by country/standard; the mill certificate governs the exact specification.
In which forms is S235JR available?
S235JR is supplied as Round bar, Flat bar, Square bar, Equal angle, Bright / cold-drawn bar, Profile, Plate / sheet, in Bars Ø 8–250 mm · profiles per section (bar diameter; flats, plates and sheet are quoted to specification).
What is S235JR used for?
Typical applications include General steel structures, Frames & supports, General fabrication, Construction.