TQ1 Die Steel for die casting
TQ1 tool steel features excellent thermal fatigue resistance, high hot strength and good impact toughness. It is an ideal choice for die casting, hot forming and die forging dies.
- Standard: TQ1 Kind&Co
- Technique: Forged
- Shape: Block
- Heat treatment: Annealed / Q+T
- Surface Treatment: Black, Machined
- Tolerance:+/- 1%
- MOQ: 1
We supply TQ1 in various custom sizes
block size range
- Thickness: ≤700 mm
- Width: ≤1200 mm
Chemical Composition (%)
Grade | C | Si | Mn | Cr | Mo | V |
TQ1 | 0.36 | 0.30 | 0.40 | 5.2 | 1.90 | 0.55 |
Main characteristics of TQ1 tool steel
- Superior thermal fatigue resistance – minimizes heat cracking
- High hot strength – stable hardness at high temps
- Excellent impact toughness – resists shock load cracking
- Good hardenability – uniform cross-section hardness
TQ1 tool steel applications
TQ1 steel For Die casing
TQ1 boasts great thermal fatigue resistance and steady hot hardness, suppressing heat cracks under repeated high-temperature cycles for long-lasting casting dies.
TQ1 steel For Hot forming
Balanced toughness and thermal stability enable TQ1 to endure drastic temperature shifts, maintaining precise dimensions during mass hot forming production.
TQ1 steel for Die foreging
High impact toughness and uniform hardness make TQ1 stand up to heavy striking loads, reducing premature damage on hot forging tooling.
Our production technology for TQ1 KIND&CO Die Steel
- Melting
- Forging
- Hardening & Annealing
- Finishing
- Stock & Sawing
- Machining
- Vacuum Hardening
- UT 100% SEP1921 Class 3 D/d or E/e
- Spheroidized microstructure as per standard NADCA207-2003 AS1-AS9
- Macrostructure, microstructure, grain size, and impact toughness shall meet the standards specified in GB/T 1299-2025 for Tool and Die Steels.
mechanical properties & heat treatment of TQ1 steel
| Heat temperature | Start forging temperature | Finish forging temperature | Cooling method |
| 1120-1150 °c | 1050-1100 °c | 900-850 °c | Pit or sand cooling |
Annealing
- Temperature: 820–840 ℃
- Holding time: 4–6 h; Slow furance cooling
- Hardness after annealing: Max.220HB.
Hardening
- Temperature: 1010–1020 ℃
- Quenching: air, hot bath at appr. 540 ℃,oil or Polymer (when oil or polymer, interrupt at 230–280 ℃), or vacuum hardening.
- Hardness obtainable: appr.54 HRC.
Stress relieving
- Temperature: appr.650 ℃
- Holding time: 2–4 h;Slow cooling
Tempering
- Temperature: 540–680 ℃
- To increase toughness,temper 3 times.
- Nitriding: possible For die casting models we recommend our nitriding programm no.99.
- This nitriding layer is free form any compound zone and therefore without any negative influence on development of heat checks.
- Preheating before use: 150–350 ℃–depending on application.
Why Choose NSPM as Your TQ1 Tool Steel Supplier
Source Direct
Direct mill cooperation ensures stable supply, competitive pricing, and consistent quality. Global resource integration and strong supply chain management guarantee reliable material sourcing and long-term availability.
Stock Ready
50,000+ tons inventory across 11 warehouses enables fast delivery. Flexible cutting, short lead times, and ready stock support urgent demands and improve customers’ production efficiency.
Expert Team
600+ professionals, including R&D specialists and technical engineers, provide application-driven support. Fast response and deep tooling knowledge ensure accurate solutions for diverse industrial needs.
Fully Inspected
Strict quality control system with full traceability, UT testing, and heat treatment records. Certified standards (ISO, CE) ensure every material meets high-performance and reliability requirements.
Full-Chain Machining
From steel supply to precision machining, heat treatment, and equipment manufacturing, NSPM offers integrated solutions that enhance accuracy, efficiency, and overall tooling performance.
