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Ganpat Metal manufactures and supplies High-Performance Tool Steel Round Bars in AISI D2 (Cold Work Die Steel), AISI H13 (Hot Work Die Steel), and EN31 / 100Cr6 / 52100 (High-Carbon Bearing Steel) conforming to ASTM A681, DIN 17350, and BS 970 standards. These specialty tool steels are engineered for applications demanding extreme surface hardness, compressive strength, abrasion resistance, and high-temperature thermal fatigue toughness.
AISI D2 features 12% chromium and high carbon, providing unmatched wear resistance for blanking dies, shear blades, and thread-rolling rolls. AISI H13 contains 5% chromium with molybdenum and vanadium, offering superior thermal shock resistance for die casting dies and hot forging punches. EN31 provides high surface hardness up to 64 HRC and rolling contact fatigue resistance for bearings, guide pins, and precision rollers.
Our tool steel round bars are supplied in spheroidized annealed condition (ready for precision machining and subsequent heat treatment) with guaranteed ultrasonic sound integrity.
GM handles enquiries for Tool Steel Round Bars where buyers need to match round bar diameters, machining tolerances (h9, h11, k12), and material grade to engineering drawings or purchase specifications. The supplied range covers precision cold drawn, peeled, centerless ground, and forged round bars beginning from 3 mm up to 500 mm diameter, with cut-to-size billet and pre-machined options.
Grade selection should be based on the required mechanical properties, core hardness, chemical composition, and operating temperature conditions of the application. Buyers should also confirm the applicable standard specification (ASTM / ASME / DIN / EN), delivery condition (annealed, solution treated, or quenched & tempered), NDT testing (ultrasonic / PMI), and mill documentation before finalizing an order.
| Parameter | Specification |
|---|---|
| Standard Specifications | ASTM A681 (D2, H13), DIN 17350, BS 970 535A99 (EN31), ASTM A295 (52100) |
| Available Grades | AISI D2 (1.2379), AISI H13 (1.2344), EN31 / 100Cr6 (1.3505) |
| Diameter Range | 10 mm to 450 mm diameter |
| Length | 100 mm to 6000 mm / Custom cut lengths |
| Delivery Condition | Spheroidized Soft Annealed (Ready for machining) |
| Hardness After HT | D2: 58–62 HRC • H13: 48–52 HRC • EN31: 60–64 HRC |
| Surface Finish | Black Hot Rolled, Peeled & Polished, Smooth Turned, Centerless Ground |
| Dimensional Tolerance | DIN 7527 / EN 10278 h9, h11, k12 |
| Testing & Certification | 100% Ultrasonic Testing (SEP 1921 Group 3 Class D/d), Hardness, PMI |
| Documentation | EN 10204 Type 3.1 / 3.2 Mill Test Certificate |
Standard chemical composition limits conform to international metallurgical standards.
| Grade | C | Cr | Mo | V | Mn | Si |
|---|---|---|---|---|---|---|
| AISI D2 (1.2379) | 1.40 – 1.60 | 11.0 – 13.0 | 0.70 – 1.20 | 0.50 – 1.10 | 0.20 – 0.60 | 0.10 – 0.60 |
| AISI H13 (1.2344) | 0.32 – 0.45 | 4.75 – 5.50 | 1.10 – 1.75 | 0.80 – 1.20 | 0.20 – 0.50 | 0.80 – 1.20 |
| EN31 / 100Cr6 (1.3505) | 0.95 – 1.10 | 1.30 – 1.60 | — | — | 0.25 – 0.45 | 0.15 – 0.35 |
Minimum mechanical property requirements in designated standard delivery condition:
| Grade | Annealed Hardness | Quenched & Tempered Hardness | Key Mechanical Trait | Operating Temp |
|---|---|---|---|---|
| AISI D2 | ≤ 255 HB | 58 – 62 HRC | Supreme Abrasive Wear Resistance | Up to 400°C |
| AISI H13 | ≤ 235 HB | 48 – 52 HRC | High Thermal Fatigue Resistance | Up to 600°C |
| EN31 / 100Cr6 | ≤ 207 HB | 60 – 64 HRC | High Rolling Contact Fatigue Life | Up to 250°C |
| Standard / Country | Designation |
|---|---|
| AISI D2 | UNS T30402 • Werkstoff 1.2379 • DIN X153CrMoV12 • JIS SKD11 • BD2 |
| AISI H13 | UNS T20813 • Werkstoff 1.2344 • DIN X40CrMoV5-1 • JIS SKD61 • BH13 |
| EN31 / 100Cr6 | UNS G52986 • Werkstoff 1.3505 • AISI 52100 • JIS SUJ2 • BS 535A99 |
| Form / Type | Size Range | Length / Dimensions | Condition / Standard |
|---|---|---|---|
| Cold Drawn Tool Steel Bar | 10 mm to 45 mm Dia | 1000 mm to 4000 mm | Cold Drawn, Spheroidized Annealed, h9/h11 |
| Peeled & Turned Tool Bar | 25 mm to 160 mm Dia | Up to 5000 mm | Turned & Polished, Annealed, k12/h11 |
| Forged Tool Steel Block/Bar | 100 mm to 450 mm Dia | Up to 4000 mm | Forged, Annealed, 100% UT Inspected |
| Pre-Machined Tool Blocks | All Sizes | Cut-to-size | Saw-cut pieces with machining allowances |
Custom dimensions, special cuts, and tailored surface conditions available on request.
Enter round bar diameter & length and click Calculate to get approximate weight.
Ganpat Metal manufactures and supplies certified Tool Steel Round Bars for industrial buyers across India. All materials are sourced from premium quality mills, fully tested for chemistry, mechanical properties, and dimensional tolerances, and supplied with complete traceable Mill Test Certificates.
Whether you require standard stock dimensions or customized sizes, Ganpat Metal maintains deep inventories in Mumbai and provides rapid dispatch, custom cut-to-length services, and third-party inspection support.
India
UAE
Saudi Arabia
Oman
Australia
Malaysia
Singapore
Bangladesh
Egypt
Brazil
Russia
Kazakhstan
| Requirement | Details to Provide |
|---|---|
| Grade | AISI D2 (1.2379) / AISI H13 (1.2344) / EN31 (100Cr6 / 1.3505) |
| Standard | ASTM A681 / DIN 17350 / BS 970 / ASTM A295 |
| Diameter (mm) | Required diameter in mm with tolerance requirement |
| Length | Standard 3m or exact cut-to-length billets in mm |
| Delivery Condition | Spheroidized Soft Annealed (Machinable) |
| Quantity | Required quantity in kg or pieces |
| Ultrasonic Testing | UT inspection according to SEP 1921 Group 3 Class D/d |
| Documentation | EN 10204 Type 3.1 / 3.2 MTC with chemical and annealed hardness cert |
