4130 Round Bar Manufacturer & Supplier in India | SAE 4130 Round Bars | AISI 4130 | DIN 1.7218 | 25CrMo4 Alloy Steel Bars
A 4130 round bar is a high-strength chromium-molybdenum (Cr-Mo) alloy steel bar known for its excellent toughness, good weldability, and reliable performance under stress. Because of this balanced combination of strength and flexibility, AISI 4130 round bars are widely used in industries such as aerospace, oil & gas, automotive, defense, and heavy engineering.
We are a trusted AISI 4130 round bar supplier and manufacturer in India, offering SAE 4130 round bars / AISI 4130 / 1.7218 / 25CrMo4 forged bars in a wide range of sizes, finishes, and conditions. Our material is available as forged bars, black bars, and bright bars, meeting both domestic and international quality standards.
What is AISI 4130 Alloy Steel?
AISI 4130 alloy steel is a low-alloy steel containing chromium and molybdenum. Chromium improves hardness and corrosion resistance, while molybdenum increases strength and resistance to high temperatures. This makes 4130 steel bars suitable for parts that must handle heavy loads and repeated stress.
Because of its versatility, SAE 4130 round bars are commonly supplied in annealed, normalised, quenched & tempered conditions, depending on the final application.
Equivalent Grades:
- AISI/SAE 4130
- DIN / WNR 1.7218
- EN 25CrMo4
- UNS G41300
- BS 708A25
Key Properties of AISI 4130 Round Bars
The popularity of UNS G41300 round bars comes from their balanced mechanical and physical properties.
Mechanical Advantages
- High tensile strength
- Excellent fatigue resistance
- Good impact strength
- Reliable performance under pressure
Practical Benefits
- Easy to machine in an annealed condition
- Good weldability compared to higher-carbon steels
- Can be heat-treated for higher strength
- Performs well in both low and high temperatures
These qualities make Alloy Steel AISI 4130 bars a preferred choice for structural and load-bearing applications.
SAE 4130 Round Bars – Product Range We Offer
We stock and manufacture a complete range of Alloy Steel AISI 4130 bars, customised as per industry needs.
Available Standards
- 4130 Round Bar
- ASTM A29 Type SAE 4130 Hex Bar
- WNR 1.7218 Square Bar
- AISI 4130 Alloy Steel Rectangular Bars
- AISI 4130 Alloy Steel Square Bars
- Cr-Mo Alloy Steel 4130 Hex Bars
Available Finishes
- Forged Bars
- Black Bars
- Bright Bars
- 708A25 Bright Bar
- Cold Drawn & Turned Bars
We are a reliable bright bars stockist and exporter, supplying precision-finished bars with tight dimensional tolerances.
Specifications of SAE 4130 Round Bars
| Standard | Specification |
| ASTM | ASTM A29 |
| SAE / AISI | SAE 4130 / AISI 4130 |
| DIN / EN | DIN 1.7218 / EN 25CrMo4 |
| UNS | G41300 |
| BS | 708A25 |
| Form | Round, Square, Hex, Rectangular |
| Size Range | As per customer requirement |
| Finish | Black, Bright, Forged |
| Condition | Annealed / Q&T / Normalized |
Chemical Composition of AISI 4130 Alloy Steel (Typical)
| Element | Percentage (%) |
| Carbon (C) | 0.28 – 0.33 |
| Manganese (Mn) | 0.40 – 0.60 |
| Chromium (Cr) | 0.80 – 1.10 |
| Molybdenum (Mo) | 0.15 – 0.25 |
| Silicon (Si) | 0.15 – 0.30 |
| Sulphur (S) | ≤ 0.040 |
| Phosphorus (P) | ≤ 0.035 |
Mechanical Properties of 4130 Round Bar (Typical – Q&T)
| Property | Value |
| Tensile Strength | 560 – 670 MPa |
| Yield Strength | ≥ 460 MPa |
| Elongation | ≥ 18% |
| Hardness | 197 – 237 HB |
Typical Applications of 4130 Alloy Steel Bars
Because of their strength and toughness, SAE 4130 round bars are widely used across industries.
- Aerospace components and aircraft structures
- Oil & gas drilling tools
- Automotive axles, shafts, and gears
- Hydraulic cylinders
- Structural tubing and pressure vessels
- Forging components
- Defense and heavy engineering parts
AISI 4130 alloy steel rectangular bars and square bars are often chosen for precision components that require strength with reduced weight.
Why Choose Our AISI 4130 Round Bars?
We don’t just sell steel—we work with it every day. Our experience in handling Cr-Mo alloy steel 4130 hex bars and round bars allows us to guide customers toward the right material for their exact application.
- In-house forging and processing expertise
- Strict quality checks and material traceability
- Ready stock of 4130 round bar supplier sizes
- Custom cutting and heat treatment support
- Competitive pricing with global export capability
As one of the leading manufacturers in Mumbai, India, Alloy Steel AISI 4130 Square Bars exporter we supply Alloy Steel AISI 4130 bright bars and forged products to clients worldwide.
4130 Round Bar – Trusted Strength for Critical Applications
Whether you need a 4130 annealed steel bar for machining or ASTM A29 Type SAE 4130 hex bar for structural use, we ensure material that performs reliably in real-world conditions. Our focus is always on quality, consistency, and long-term performance, not just meeting specifications on paper.
If you are looking for a dependable AISI 4130 round bar manufacturer in India, with technical support and global supply capability, we are ready to help you choose the right material for your project.
Global Reach
ASC LLP boasts a robust global presence, committed to delivering unparalleled service and quality to clients around the world. Our dedication to prompt delivery and exceptional customer care sets us apart in the industry. Major corporations across the USA, Europe, Asia, and other regions place their trust in our high-quality 4130 Round Bars. This widespread trust underscores our reputation for reliability and excellence. By consistently meeting and exceeding the expectations of our international clientele, we continue to solidify our position as a leader in the global steel market.
Countries We Export To
UNITED STATES, EUROPE, UK, UAE, SAUDI ARABIA, OMAN, KUWAIT, JORDAN, QATAR, INDONESIA, MALAYSIA, BRAZIL, SPAIN, ITALY, FRANCE, GERMANY, BAHRAIN, SRI LANKA, AZERBAIJAN, AUSTRALIA, AUSTRIA, PHILIPPINES, TURKEY, RUSSIA, IRAN, IRAQ, CANADA, KOREA, JAPAN, YEMEN, FINLAND, ZIMBABWE, HUNGARY, PORTUGAL, VIETNAM, MOROCCO, THAILAND, SOUTH AFRICA, MEXICO, SINGAPORE, GREECE, KUWAIT, POLAND, NEW ZEALAND, SWEDEN, SWITZERLAND, BELGIUM, BHUTAN, BANGLADESH, TAIWAN, ROMANIA, CAMBODIA, KAZAKHSTAN, AFGHANISTAN.
