Standard and edition
Confirm the controlling document; a grade name or cross-reference alone is not a complete acceptance specification.
Stainless Steel Round Bar | Duplex Steel Round Bar | High Nickel Alloy Round Bar
Alloy Steel Round Bar
Alloy Steel AISI 4340 Round Bar. Choose Piyush Steel India Round Bar your trusted supplier and manufacturer of top quality AISI 4340 round bars. Our ready stock includes DIN 1.6565, UNS G43400, and 40NiCrMo6 round bars.
For a quotation, specify the grade, product standard, dimensions, supply condition, tolerances, testing and delivery destination.
Product information by Piyush Steel India

At a glance
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Buyer selection guide
Begin with the drawing, equipment specification, or governing code. The product name identifies the material route; acceptance depends on the complete purchase specification.
Common applications
Specifications
| Dimensions: | ASTM, ASME, DIN, BS, EN, IS, AMS, JIS, IBR & Other International Standards. |
|---|---|
| Standard: | AISI 4340 |
| Diameter: | 100mm-1200mm |
| Length: | 12m |
| Finish: | Bright, Polish & Black |
| Condition: | Cold Drawn & Polished Cold Drawn, Centreless Ground & Polished |
| Form: | Round, Square, Hex (A/F), Rectangle, Wire (Coil Form), Wire-mesh, Billet, Ingot, Forging Etc. |
We maintain ready stock of Alloy Steel AISI 4340 Round Bar, Alloy Steel AISI 4340 Hex Bar, Alloy Steel AISI 4340 Square Bar, Alloy Steel AISI 4340 Bright Bar, Alloy Steel AISI 4340 Flat Bar and Alloy Steel AISI 4340 Rods. Get in touch with us with your requirement for quick quote.
Chemical composition
| Grade | AISI 4340 |
|---|---|
| C | 0.38 - 0.43 |
| Mn | 0.60 - 0.80 |
| Si | 0.15 - 0.35 |
| S | 0.040 |
| Cu | - |
| Fe | - |
| Mo | - |
Mechanical properties
| Element: | AISI 4340 |
|---|---|
| Tensile Strength: | 850 |
| Yield Strength (0.2%Offset): | 635 |
| Elongation: | 13 |
Technical considerations
Confirm the controlling document; a grade name or cross-reference alone is not a complete acceptance specification.
Check that property values apply to the required diameter, heat treatment, test direction and temperature.
State tolerances, straightness, length, surface finish, machining allowance, and end condition where required.
Define inspection, test reports, marking, heat identification, third-party requirements, and destination documentation.
Equivalent grades
| Standard: | AISI 4340 |
|---|---|
| WERKSTOFF NR. | 1.6565 |
| UNS | G43400 |
Product details
Send your product requirements for a quotation.
Piyush Steel India is manufacturer, stockist, exporter and supplier Alloy Steel AISI 4340 Round Bars conforming to various national and international standards. We are one of the largest stockist of Alloy Steel AISI 4340 Round Bars.
Piyush Steel India is manufacturer, stockist, exporter and supplier Alloy Steel AISI 1018 Round Bars conforming to various national and international standards. We are one of the largest stockist of Alloy Steel AISI 4340 Bright Bars.
Piyush Steel India is manufacturer, stockist, exporter and supplier Alloy Steel AISI 1018 Round Bars conforming to various national and international standards. We are one of the largest stockist of Alloy Steel AISI 4340 Square Bars.
Piyush Steel India is manufacturer, stockist, exporter and supplier Alloy Steel AISI 1018 Round Bars conforming to various national and international standards. We are one of the largest stockist of Alloy Steel AISI 4340 Hex Bars.
Piyush Steel India is manufacturer, stockist, exporter and supplier Alloy Steel AISI 1018 Round Bars conforming to various national and international standards. We are one of the largest stockist of Alloy Steel AISI 4340 Flat Bars.
Piyush Steel India is manufacturer, stockist, exporter and supplier Alloy Steel AISI 1018 Round Bars conforming to various national and international standards. We are one of the largest stockist of Alloy Steel AISI 4340 Forged Bars.
Alloy Steel AISI 4340 Round Bars Price list is available on demand. Send your requirement to get the latest price for Alloy Steel AISI 4340 Round Bars and Rods. Get in touch with us for your requirement.
Our Alloy Steel AISI 4340 Round Bars & Rods are exported across the world. You can send your export enquiry using the contact us link below. We are also prominent exporter to the below countries.
Product questions
This product is organized under Alloy Steel Round Bar. Use the category page to compare the grade range.
UNS G43400. Confirm the applicable standard and edition for your order.
Provide the grade and standard, diameter, length, quantity, condition, finish, tolerance, testing, documentation, destination, and required timing.
Related products
Specification-led enquiries
Include the governing standard, dimensions, quantity, condition, testing requirements, documentation, and destination.
