Alloy Steel ST-52 / S355J2
Alloy Steel ST-52 / S355J2
Apar Alloys, a trusted Stockist and Supplier of premium alloy steel materials, offers Alloy Steel ST-52 / S355J2, a high-strength low-alloy structural steel renowned for its excellent toughness, weldability, and durability. Specifically designed for applications requiring good fatigue and impact resistance, this grade is widely used across construction, structural, and engineering sectors, providing reliable performance in critical load-bearing components.
With uniform mechanical properties and good hardenability, Alloy Steel ST-52 / S355J2 delivers reliable performance under normalized or stress-relieved conditions. The carefully controlled alloy composition ensures superior resistance to wear, abrasion, and moderate temperature deformation, making it ideal for structural components, high-load parts, and precision-engineered applications where durability, reliability, and long service life are essential.
Specifications
| Grade | AISI | UNS | ASTM A276 / A479 | ASTM A182 | EN (W-Nr) | DIN Spec |
|---|---|---|---|---|---|---|
| ST52 | – | K02705 | ASTM A276 / A479 | ASTM A182 | 1.0570 | ST52-3 |
| S355J2 | – | K12052 | ASTM A276 / A479 | ASTM A182 | 1.0577 | S355J2 |
General Characteristics
Low-alloy structural steel with high strength
Excellent fatigue and impact resistance
Good weldability and machinability
Suitable for normalizing and stress-relieving
Reliable performance in moderate-stress environments
Ideal for construction and load-bearing applications
Chemical Composition (nominal) %
| Element | C | Si | Mn | P | S | Cr | Ni | Mo | Fe |
|---|---|---|---|---|---|---|---|---|---|
| ST52 | 0.20 | 0.50 | 1.50 | ≤0.030 | ≤0.030 | 0.30 | 0.30 | 0.08 | Balance |
| S355J2 | 0.18 | 0.50 | 1.50 | ≤0.025 | ≤0.025 | 0.30 | 0.30 | 0.08 | Balance |
Applications
Structural beams and columns
Transmission shafts and drive components
Heavy-duty machinery parts
Automotive and powertrain components
Construction and engineering structures
Load-bearing industrial applications
Advantages
- High tensile and yield strength with good ductility
- Excellent wear and fatigue resistance under moderate loads
- Stable mechanical properties after normalizing
- Reliable machinability and consistent dimensional control
- Suitable for precision-engineered and structural components
- Extended component life and low maintenance requirements
Mechanical Properties (Typical at Room Temperature)
| Property | Value |
|---|---|
| Tensile Strength (MPa) | 470 – 630 |
| Yield Strength (MPa) | 355 |
| Elongation (%) | 20 – 25 |
| Hardness (Brinell) | 150 – 190 HB |
Why Choose Apar Alloys
At Apar Alloys, we blend technical expertise with a customer-focused approach. Our extensive stock and global sourcing partnerships ensure clients receive certified materials that meet international standards and precise application requirements.
Trusted Stockist & Supplier
We maintain a ready inventory of materials, ensuring quick and reliable dispatch for all client needs.
Sourced from Reputed International Mills
All products are procured from trusted global suppliers, guaranteeing consistent quality and performance.
Comprehensive Quality Assurance
Every material undergoes detailed inspections and traceable documentation to meet stringent quality standards
Custom Sizes, Finishes & Services
We provide tailored solutions, including cut-to-length, custom sizes, and finishes to match project requirements.
Competitive Pricing & Reliable Delivery
Apar Alloys offers cost-effective solutions with timely delivery across industries.
Dedicated Client Support
Our expert team ensures personalized assistance, building trust and long-term client relationships.
Get in Touch
Contact Us
Looking for a trusted supplier for Alloy Steel ST-52 / S355J2 materials? Contact us today for quotes, material specifications, or customized supply solutions for Alloy Steel Round Bars and Pipes.
[Call] +91 98333 89128
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