AISI 4340 Round Bar exporter in Indonesia
AISI 4340 Round Bar exporter in Indonesia plays a crucial role in supplying high-strength alloy steel bars to various industries. Known for its exceptional toughness, fatigue strength, and resistance to wear and corrosion, AISI 4340 is a premium grade steel widely used for manufacturing critical components. The round bar form is particularly favored for its versatility and ease of machining, making it suitable for a broad range of industrial applications.
This alloy steel is characterized by its composition, which includes nickel, chromium, and molybdenum, enhancing its mechanical properties significantly. Typically supplied in heat-treated condition, the bars offer excellent tensile strength and impact resistance. Dimensions are available in various diameters and lengths to accommodate diverse manufacturing requirements, ensuring compatibility with precision engineering and heavy-duty fabrication processes.
Industries such as automotive, aerospace, and heavy machinery rely heavily on these bars for producing gears, shafts, fasteners, and connecting rods. The materialβs superior fatigue resistance and toughness make it ideal for components subjected to high stress and dynamic loads. Additionally, its weldability and machinability allow manufacturers to customize parts with exact specifications without compromising structural integrity.
Exporters in Indonesia maintain stringent quality control measures to meet international standards, ensuring that each batch complies with ASTM and SAE specifications. The supply chain is optimized for timely delivery, with packaging and handling tailored to preserve the materialβs surface finish and mechanical properties during transit. This readiness to serve global markets makes Indonesian suppliers a reliable source for businesses seeking consistent quality and performance.
For industrial buyers looking to source AISI 4340 alloy steel in round bar form, partnering with experienced exporters in this region guarantees access to competitively priced, certified materials. Whether for prototyping or mass production, these suppliers provide comprehensive support, including technical consultation and customized order fulfillment, to meet the evolving demands of modern manufacturing sectors.
Our Approvals | Third Party Inspection
Lead Time
2β7 weeks depending on size
Delivery Terms
FOB, CIF, DDP
Shipping Modes
Sea / Air / Express
Why AISI 4340 Round Bar exporter in Indonesia Are Preferred by Global Buyers
- β Factory Pricing: Direct manufacturer rates with bulk stock
- β Certified Quality: ISO & 3rd-party tested, EN 10204 certified
- β Export-Ready: Sea-worthy packaging for on-time delivery
- β Fast RFQs: Quick quotes for custom sizes & quantities
- β Traceability: 100% heat number tracking from raw material to finished product
Trusted by industries like oil & gas, petrochemicals, power, marine, and heavy engineering.
- Manufacturing Capacity: 500 MT / Month
- Export Experience: 50+ Years
- Countries Served: 50+
- Annual Export Volume: 5,500 MT
Table of Contents
- 1. What is AISI 4340 Round Bar exporter in Indonesia
- 2. How to Choose the Right Manufacturer
- 3.Comparison of AISI 4340 Round Bar exporter in Indonesia
- 4. Why Global Buyers Source from Super Metal Manufacturing Co.
- 5. Features
- 6. Technical Overview
- 7. Specifications
- 8. Available Grades
- 9. Available Sizes
- 10. Chemical Properties
- 11. Mechanical Properties
- 12. Physical & Thermal Properties
- 13. Electrical Resistivity
- 14. Equivalent Grades
- 15. Manufacturing Process & Heat Treatment
- 16. Various Types
- 17. Applications & Uses
- 18. Industries We Serve
- 19. Latest Price List
- 20. MOQ & Payment Terms
- 21.Export Packaging & Shipping
- 22. Cities We Supply in India
- 23. Countries We Export Worldwide
- 24. Our Certifications
- 25. Quality Inspection & Testing
- 26. Our Other Product Types
- 27. People Also Search For
- 28. Frequently Asked Questions
- 29. About Super Metal Manufacturing Co.
How to Choose the Right AISI 4340 Round Bar exporter in Indonesia
India is home to hundreds of manufacturers ranging from small job shops to large ISO-certified exporters. International and domestic buyers typically evaluate manufacturers based on quality compliance, production capacity, export experience, and pricing transparency.
- Certification & international standards (ASME, ASTM, EN)
- Manufacturing capability vs trading activity
- Export documentation & inspection support
- Stock availability & lead time reliability
- Past supply experience in oil & gas, EPC & heavy industries
Comparison Factors Among AISI 4340 Round Bar exporter in Indonesia
| Evaluation Factor | Small Local Suppliers | Trading Companies | ISO-Certified Manufacturers |
|---|---|---|---|
| Manufacturing Control | Limited | None | Full in-house / audited partners |
| International Standards | Basic | Depends on source | ASME / ASTM / EN |
| Inspection & MTCs | Limited | Inconsistent | EN 10204 3.1 / 3.2 |
| Export Experience | Low | Medium | 50+ countries |
| Risk for EPC Projects | High | Medium | Low |
International buyers typically prefer ISO-certified manufacturers for large-scale or critical applications due to better quality control, documentation, and lower project risk.
Why Global Buyers Choose Super Metal Manufacturing Co.
Super Metal Manufacturing Co. is a trusted ISO 9001:2015 certified manufacturer and global exporter of ferro alloys and metal products, supplying consistent, high-quality materials to customers across USA, UK, Europe, Middle East, Africa, and Asia-Pacific. Our focus on quality assurance, cost efficiency, and on-time delivery makes us a preferred sourcing partner for international buyers.
| Key Advantage | Buyer Benefit |
|---|---|
| ISO 9001:2015 Certified Manufacturing | Consistent quality with documented QA systems and process control |
| ASME / ASTM / EN Compliant Products | Globally accepted standards with EN 10204 3.1 / 3.2 MTCs |
| Lower Manufacturing & Sourcing Costs | Save up to 15β20% compared to European suppliers |
| Favorable Exchange Rate Advantage | Reduced landed cost for international importers |
| In-House Testing & Inspection Facilities | Strict chemical, mechanical & dimensional quality checks |
| Bulk Stock & High Production Capacity | Fast order fulfillment and stable supply for large projects |
| Custom Sizes & Drawing-Based Manufacturing | Products manufactured exactly to buyer specifications |
| Export-Grade Packaging & Global Logistics | Sea-worthy packing, palletization & worldwide shipping support |
| Faster Global Shipping Routes | Optimized logistics for Middle East, Africa & Southeast Asia |
| Technical & After-Sales Support | Project assistance, documentation & responsive RFQ handling |
| Trusted by Global Steel & EPC Companies | Proven export experience across 50+ countries |
Features of AISI 4340 Round Bar
- β High tensile strength and toughness
- β Excellent fatigue resistance
- β Good hardenability for heat treatment
- β Superior machinability
- β Suitable for high-stress applications
- β Versatile for various industrial applications
Technical Overview of AISI 4340 Round Bar
| Product | Composition | Usage | Standards |
|---|---|---|---|
| AISI 4340 Round Bar | 0.38-0.43% C, 0.70-0.90% Mn, 1.50-1.80% Ni, 0.40-0.60% Cr, 0.20-0.30% Mo | Used in high-strength applications such as gears, shafts, and heavy machinery components. | AISI, ASTM, SAE |
| AISI 4340 Round Bar | 0.38-0.43% C, 0.70-0.90% Mn, 1.50-1.80% Ni, 0.40-0.60% Cr, 0.20-0.30% Mo | Ideal for aerospace and automotive applications due to its high toughness and fatigue resistance. | AISI, ASTM, SAE |
| AISI 4340 Round Bar | 0.38-0.43% C, 0.70-0.90% Mn, 1.50-1.80% Ni, 0.40-0.60% Cr, 0.20-0.30% Mo | Commonly used in the manufacture of heavy-duty components and structural applications. | AISI, ASTM, SAE |
Specifications Table
| Material | AISI 4340 |
|---|---|
| Grades | 4340 |
| Standard | ASTM A29/A29M |
| Size Range | 10 mm to 500 mm diameter |
| Length | Up to 6 meters |
| Form | Round Bar |
Available Grades Table
| Product | Composition | Applications |
|---|---|---|
| AISI 4340 Round Bar | C: 0.38-0.43%, Mn: 0.60-0.90%, Cr: 0.70-0.90%, Ni: 1.50-1.75%, Mo: 0.20-0.30% | Used in aerospace components, automotive parts, and heavy machinery. |
| AISI 4340 HT Round Bar | C: 0.38-0.43%, Mn: 0.60-0.90%, Cr: 0.70-0.90%, Ni: 1.50-1.75%, Mo: 0.20-0.30% | Suitable for high-stress applications, including aircraft landing gear and crankshafts. |
| AISI 4340 QT Round Bar | C: 0.38-0.43%, Mn: 0.60-0.90%, Cr: 0.70-0.90%, Ni: 1.50-1.75%, Mo: 0.20-0.30% | Ideal for components in high-performance machinery and structural applications. |
| AISI 4340 N Round Bar | C: 0.38-0.43%, Mn: 0.60-0.90%, Cr: 0.70-0.90%, Ni: 1.50-1.75%, Mo: 0.20-0.30% | Commonly used in the production of gears, fasteners, and heavy-duty shafts. |
| AISI 4340 V Round Bar | C: 0.38-0.43%, Mn: 0.60-0.90%, Cr: 0.70-0.90%, Ni: 1.50-1.75%, Mo: 0.20-0.30% | Utilized in applications requiring enhanced toughness and fatigue resistance. |
Available Sizes of AISI 4340 Round Bar (MM)
| Size (MM) | Size (MM) |
|---|---|
| 10 | 12 |
| 14 | 16 |
| 18 | 20 |
| 22 | 25 |
| 30 | 35 |
| 40 | 45 |
| 50 | 55 |
| 60 | 65 |
| 70 | 75 |
| 80 | 90 |
Chemical Properties of AISI 4340
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.38 - 0.43 |
| Manganese (Mn) | 0.60 - 0.90 |
| Silicon (Si) | 0.15 - 0.40 |
| Chromium (Cr) | 0.70 - 0.90 |
| Nickel (Ni) | 1.65 - 2.00 |
| Molybdenum (Mo) | 0.20 - 0.30 |
| Phosphorus (P) | 0.035 max |
| Sulfur (S) | 0.040 max |
Mechanical Properties of AISI 4340
| Property | Value |
|---|---|
| Tensile Strength (MPa) | 850 - 1080 |
| Yield Strength (MPa) | 650 - 850 |
| Elongation (%) | 12 - 20 |
| Hardness (HB) | 207 - 300 |
| Modulus of Elasticity (GPa) | 210 |
AISI 4340 Round Bar β Physical & Thermal Properties
Density of AISI 4340 Round Bar
| Property | Metric | Imperial |
|---|---|---|
| Density | 7.85 g/cmΒ³ | 0.284 lb/inΒ³ |
Melting Point of AISI 4340 Round Bar
| Property | Metric | Imperial |
|---|---|---|
| Melting Point | 1425-1540 Β°C | 2600-2800 Β°F |
Specific Heat of AISI 4340 Round Bar
| Specific Heat of AISI 4340 Round Bar | ||
|---|---|---|
| Specific Heat (J/kgΒ·K) | Temperature Range (Β°C) | Condition |
| 500 | 25-100 | Annealed |
| 460 | 100-400 | Annealed |
| 420 | 400-800 | Annealed |
Electrical Resistivity of AISI 4340 Round Bar
| Electrical Resistivity | ||
|---|---|---|
| Value (¡Ω·m) | Temperature (°C) | Treatment or Condition |
| 75 | 20 | Annealed |
| 80 | 100 | |
| 85 | 200 | |
| 90 | 300 | |
| 95 | 400 | |
Equivalent of AISI 4340
| Standard | Werkstoff Nr. | UNS |
|---|---|---|
| ASTM A29 | 1.6511 | G43400 |
| DIN | 34CrNiMo6 | 1.6582 |
Manufacturing Process & Heat Treatment of AISI 4340
Annealing
The annealing process for AISI 4340 involves heating the steel to a temperature range of 800-850Β°C (1472-1562Β°F) followed by a controlled cooling process. This treatment helps to relieve internal stresses, improve ductility, and enhance machinability, making it easier to work with during subsequent manufacturing stages.
Forging
AISI 4340 is typically forged at high temperatures ranging from 1100-1200Β°C (2012-2192Β°F). This process involves shaping the steel using compressive forces, which enhances its mechanical properties by refining the grain structure and improving strength and toughness. Forging is crucial for producing high-performance components in various industrial applications.
Hardening & Tempering
| Process | Temperature Range (Β°C) | Quenching Medium | Purpose |
|---|---|---|---|
| Hardening | 850-880 | Oil | Increase hardness and strength |
| Tempering | 400-600 | Air | Reduce brittleness and improve toughness |
| Stress Relieving | 600-650 | Air | Remove residual stresses from manufacturing |
The combination of these heat treatment processes ensures that AISI 4340 round bars exhibit optimal mechanical properties for demanding applications in various industries, including aerospace and automotive sectors.
Various Types
AISI 4340 Round Bar - Hot Rolled
- Diameters: 10mm to 300mm
- Condition: Hot Rolled
- Applications: Aerospace, Automotive, and Heavy Machinery
AISI 4340 Round Bar - Cold Drawn
- Diameters: 5mm to 100mm
- Condition: Cold Drawn
- Applications: High-strength components, Shafts, and Gears
AISI 4340 Round Bar - Annealed
- Diameters: 20mm to 150mm
- Condition: Annealed
- Applications: Structural applications, Tooling, and Heat Treatment
AISI 4340 Round Bar - Quenched and Tempered
- Diameters: 12mm to 250mm
- Condition: Quenched and Tempered
- Applications: Oil and Gas, Mining, and Heavy Equipment
Applications & Uses
- Oil & Gas Industry
- Petrochemical Plants
- Water Treatment Plants
- Pharmaceutical Industry
- Food & Beverage Industry
- Automobile Industry
Industries We Serve
Our alloys are widely used across:
- Steel Plants
- Foundries & Casting Units
- Automobile Industry
- Shipbuilding & Marine
- Oil & Gas
- Engineering Components
- Heavy Industrial Machinery
latest Price List of AISI 4340 Round Bar
| Material Grade | Thickness | Price (USD / Kg) | Price (INR / Kg) |
|---|---|---|---|
| AISI 4340 | 3 mm | $5.20 β $5.50 | βΉ430 β βΉ450 |
| AISI 4340 | 6 mm | $5.10 β $5.40 | βΉ420 β βΉ440 |
| AISI 4340 | 10 mm | $5.00 β $5.30 | βΉ410 β βΉ430 |
Note: Prices are indicative and may vary based on size, quantity, raw material cost, and delivery location. Contact us for the latest quotation for AISI 4340 Round Bar.
MOQ & Payment Terms
Minimum Order Quantity: 25β100 Kg depending on part size and grade.
Payment Terms: Depending On Grade and Quantity Size
Export Packaging & Shipping
- Seaworthy, fumigated wooden crates with waterproof inner lining
- Palletised packing with clear shipping marks and heat number identification
- Container stuffing supervision with loading photographs available on request
Cities We Suppllied In India
| Supply Cities | |||||
|---|---|---|---|---|---|
| Mumbai | Delhi | Pune | Chennai | Hyderabad | Bengaluru |
| Ahmedabad | Rajkot | Coimbatore | Kolkata | Bhopal | Surat |
We exported to 50+ countries worldwide.
| Exported Countries | |||||
|---|---|---|---|---|---|
| USA | UK | UAE | Germany | South Africa | Australia |
| Italy | Canada | Netherlands | Qatar | Saudi Arabia | Malaysia |
Our Certifications
We are a certified manufacturer and exporter, committed to strict quality control and international compliance standards.
Quality Inspection & Testing
At Super Metal Manufacturing Co., all products are checked through strict quality inspection and testing to meet international standards such as ASTM, ASME, EN, and DIN. This ensures consistent quality, accurate dimensions, and full material traceability.
- β Chemical composition testing
- β Mechanical tests such as tensile and hardness
- β Dimensional inspection as per standard tolerances
- β PMI, ultrasonic, and visual inspection (if required)
- β EN 10204 3.1 / 3.2 test certificates
- β Third-party inspection by SGS, TUV, BV, or Lloydβs
Our quality systems support reliable supply for oil & gas, petrochemical, power, marine, and heavy engineering projects.
People Also Search For
- AISI 4340 Steel Properties
- AISI 4340 Round Bar Supplier in Asia
- AISI 4340 Round Bar Price in Indonesia
- AISI 4340 Round Bar Applications
- AISI 4340 Round Bar Manufacturer in Indonesia
Frequently Asked Questions
About Super Metal Manufacturing Co.
Super Metal Manufacturing Co. is a trusted name in the metal industry since 1965, specializing in the manufacturing and export of high-quality 4140, EN19, and 42CrMo4 round bars. With decades of experience, we have built a strong reputation for delivering precision-engineered, durable, and high-performance steel products to industries worldwide.
Our company is committed to excellence through a robust quality management system and strict quality control at every stage of production. From sourcing premium raw materials from reputed suppliers like SAIL and JSW to final delivery, every product undergoes rigorous testing including tensile testing, bend and rebend tests, chemical analysis, and ultrasonic testing to ensure superior performance and reliability.
We are accredited with ISO 9001 certification and are TUV certified, reflecting our commitment to international quality standards. Our state-of-the-art manufacturing facilities, advanced machinery, and skilled workforce enable us to deliver customized solutions tailored to client requirements.
- β 50+ years of industry experience in alloy steel and round bar manufacturing
- β Specialized in 4140, EN19, and 42CrMo4 high-performance round bars
- β ISO certified and TUV approved quality standards
- β Strict quality testing including ultrasonic and chemical analysis
- β Premium raw material sourcing from SAIL and JSW
- β Advanced manufacturing infrastructure with modern machinery
- β Custom-engineered solutions as per drawings and specifications
- β Global export capability with reliable delivery
- β Trusted by industries for critical and high-performance applications
Our Mission
Our mission is to deliver the highest-quality alloy steel round bars while maintaining excellence in precision, innovation, and customer satisfaction. We aim to empower industries worldwide by providing reliable and durable products that meet evolving manufacturing needs.
Our Vision
Our vision is to become a global leader in the manufacturing and export of premium-quality round bars, recognized for our product excellence, innovation, and commitment to exceeding customer expectations.