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; depends on dimension and heat treatment.
Available forms.
Size range: Bars Ø 8–250 mm · profiles per section
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 is the European (EN) designation, while St37-2, SS400, A283-C are the matching names used in other countries and standards (for example AISI/SAE in the USA, JIS in Japan, GB in China, former DIN in Germany). They are near equivalents and may differ slightly in chemistry; 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.
What is S235JR used for?
Typical applications include General steel structures, Frames & supports, General fabrication, Construction.