Product Overview
ToolBar-H13 Hot-Rolled Square Bar is a premium-grade tool steel bar engineered for high-performance industrial applications demanding exceptional toughness, thermal stability, and wear resistance. Manufactured from AISI H13 — a chromium-molybdenum-vanadium hot-work tool steel — this quenched and tempered bar delivers superior hardenability and resistance to thermal fatigue. Available in precise square cross-sections ranging from 50×50mm to 200×200mm and up to 6 meters in length, it is ideal for custom forging, die block machining, and precision tooling components. As a certified H13 tool steel bar, it meets stringent ASTM A681 and AMS 2303 standards, ensuring consistent microstructure and mechanical integrity across all batches.
This hot rolled square bar undergoes full heat treatment (quenched & tempered) to achieve optimal balance between hardness and impact strength — critical for applications involving cyclic heating and mechanical stress. Its uniform grain structure and low segregation profile make it highly suitable for CNC machining, EDM pre-hardening, and surface hardening processes.
Key Features
- Full quench & temper heat treatment for enhanced toughness and dimensional stability
- Precision hot-rolled square geometry with tight tolerance control (±0.4mm)
- Excellent machinability in pre-hardened condition (42–48 HRC)
- Superior resistance to thermal cracking, softening, and oxidation up to 600°C
- Traceable material certification (MTR EN 10204 3.1 available)
- Custom cut-to-length and surface conditioning (peeled or ground) options
Technical Specifications
| Parameter |
Value |
| Grade |
AISI H13 / DIN 1.2344 / JIS SKD61 |
| Condition |
Quenched & Tempered (Q&T) |
| Hardness Range |
42–48 HRC (as-supplied) |
| Tensile Strength |
1400–1650 MPa |
| Yield Strength (0.2% offset) |
1200–1450 MPa |
| Elongation (50mm) |
≥10% |
| Reduction of Area |
≥40% |
| Impact Toughness (Charpy V-notch) |
≥25 J at 20°C |
| Chemical Composition (C) |
0.32–0.45 wt.% |
| Chemical Composition (Cr) |
4.75–5.50 wt.% |
| Surface Finish |
Hot-rolled, descaled (optional peeled or centerless ground) |
| Max Length |
6000 mm |
Applications
This ToolBar-H13 hot rolled square bar is widely specified by global forging shops, die & mold manufacturers, and aerospace component suppliers. It serves as the preferred raw material for hot forging dies, extrusion tooling, plastic injection molds, aluminum die-casting dies, and high-stress structural tooling components. As a versatile AISI H13 bar solution, it supports rapid prototyping and large-scale production of quenched and tempered bar-based tooling systems — delivering reliability where thermal shock, abrasion, and mechanical load converge.
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