Premium Hot Die Steel Supplier in Mumbai – H13, H11 & H21 Hot Work Steels
Jini Enterprise is a trusted hot die steel supplier in Mumbai, offering genuine hot work tool steels for the most demanding high-temperature applications. Hot die steel—also known as hot work tool steel—is specifically engineered to withstand the combined stresses of high temperature, thermal cycling, and mechanical impact. Whether you're die casting aluminum, extruding profiles, or forging hot metal, the right hot die steel determines your tool life and production efficiency.
We supply the three most widely used hot work grades in Mumbai's steel market: H13 (1.2344) for die casting and extrusion, H11 (1.2343) for high-temperature tooling, and H21 (1.2581) for hot punching and shear blades. All material is mill certified with full traceability, and our cut-to-size service ensures you get exactly what you need. From single pieces to bulk orders, Jini Enterprise is your reliable partner for hot die steel in Mumbai.
🔥 Why Hot Die Steel is Critical for High-Temperature Tooling
Hot work tool steels must perform under extreme conditions. The right grade delivers:
✔ Hot Hardness Retention
Maintains hardness and strength at elevated temperatures—critical for die casting and forging dies operating in extreme heat.
✔ Thermal Fatigue Resistance
Resists heat checking and cracking from repeated heating and cooling cycles—extending die life in die casting operations.
✔ High Toughness
Excellent resistance to shock loading and mechanical impact—ideal for forging dies and heavy-duty tooling.
✔ Good Hardenability
Through-hardens in large sections, ensuring uniform properties across thick die blocks.
✔ Wear Resistance
Alloy carbides provide good wear resistance, maintaining die cavity dimensions over long production runs.
✔ Proven Track Record
Hot work steels are trusted by die casters, extruders, and forgers worldwide for decades of reliable performance.
🔧 Hot Die Steel Grades We Supply in Mumbai
We supply the three most widely used hot work tool steel grades for die casting, extrusion, and forging applications:
🔥 H13 (1.2344)
- Most widely used hot work steel
- Aluminum & zinc die casting dies
- Extrusion dies, mandrels, die caps
- Forging dies and inserts
🔧 H11 (1.2343)
- Lower carbon than H13
- Better toughness, slightly lower wear resistance
- High-temperature tooling applications
- Die casting inserts, extrusion tooling
🔨 H21 (1.2581)
- Tungsten-based hot work steel
- Excellent hot hardness and wear resistance
- Hot punching, shear blades
- High-temperature structural tooling
💡 Grade Selection Tip
- H13 – Best all-round choice for most die casting
- H11 – Where higher toughness is needed
- H21 – Where extreme hot hardness is required
- Not sure? Our team helps you select the right grade
📌 Hot Die Steel Applications – Where Each Grade Excels
| Application |
Recommended Grade |
Key Property |
| Aluminum Die Casting Dies | H13 (1.2344) | Hot hardness, thermal fatigue resistance |
| Zinc Die Casting Dies | H13, H11 | Wear resistance, toughness |
| Aluminum Extrusion Dies | H13, H11 | Hot hardness, thermal shock resistance |
| Forging Dies | H13, H11 | Toughness, thermal shock resistance |
| Hot Shear Blades | H21 (1.2581) | Hot hardness, wear resistance |
| Hot Punching Tools | H21, H13 | Hot hardness, edge retention |
📊 Chemical Composition – H13, H11 & H21 Compared
| Element |
H13 (1.2344) |
H11 (1.2343) |
H21 (1.2581) |
| Carbon (C) | 0.32 – 0.45 | 0.33 – 0.41 | 0.26 – 0.36 |
| Chromium (Cr) | 4.75 – 5.50 | 4.75 – 5.50 | 2.50 – 3.30 |
| Molybdenum (Mo) | 1.10 – 1.75 | 1.10 – 1.40 | — |
| Vanadium (V) | 0.80 – 1.20 | 0.25 – 0.50 | 0.30 – 0.50 |
| Tungsten (W) | — | — | 8.50 – 10.00 |
📐 Available Forms & Sizes – Ready for Your Die Requirements
🔘 Round Bars (10mm – 450mm)
▭ Flat / Rectangular Bars
▢ Square Bars
🧱 Die Blocks & Plates (Cut-to-Size)
✨ Precision Ground Tool Blanks
✔ Custom sizes available on request. All material supplied with full dimensional inspection reports.
✨ Surface Conditions Available
⚫ Hot Rolled / Black
🔘 Peeled / Turned
✨ Precision Ground (TGP)
💡 Bright Drawn
🧪 Machined / Ground
🌟 Why Choose Jini Enterprise for Hot Die Steel in Mumbai
🔥 Hot Work Steel Expertise
Deep understanding of H13, H11, and H21 properties—we help you select the right grade and heat treatment for your die.
🔬 Premium Quality & Consistency
Rigorous quality control ensures consistent chemical composition, hardenability, and microstructure.
📦 Comprehensive Product Range
Full spectrum of hot die steel forms—round bars, flats, squares, die blocks, and custom-cut pieces for die casting, extrusion, and forging.
🚚 Pan-India Supply
Fast, reliable delivery to die casters, extruders, and forging companies across India from our Mumbai base.
🔬 Quality Assurance – Certified Hot Die Steel
✔ OES / Spectro Analysis
✔ Hardness (HRC / HB) Testing
✔ Ultrasonic (UT) Flaw Detection
✔ Microstructure & Carbide Check
✔ Hardenability Testing
✔ MTC (3.1 / EN 10204) Certified
📍 Based in Mumbai, Serving All of India: Sripati Castle Annex-1 C-103, 1st floor, Sripati Castle,
Balwant Kolhatkar Marg, Mumbai – 400004. We serve die casters, extruders, forging companies, and tool rooms across Mumbai, Maharashtra, and all major industrial hubs in India.
📞 Looking for Hot Die Steel in Mumbai? Get a Quote Today.
Partner with Jini Enterprise – your trusted hot die steel supplier in Mumbai. We supply genuine H13, H11, and H21 hot work tool steels for die casting, extrusion, and forging applications, backed by full certifications, competitive pricing, and pan-India delivery. Tell us your grade, die block size, and quantity—we’ll respond with pricing and availability.
📧 Email: jinienterprise109@gmail.com
📞 Call Now: +91 865 591 6397