Mold Steel Heat Treatment

Heat Treatment for Steel Parts

All major steel grades supported—vacuum hardening, quench & temper, nitriding, stress relieving, fast lead times.

Enhance Your Product Quality with Heat Treatment

Boost performance and lifespan, cut defects and maintenance costs.

Die Casting Molds

Die Casting Molds (Al/Mg/Zn)

Service life (shots)

+100–200%
Before: ≈20k
After: ≈40–60k

Soldering/Galling incidence

-50%
Before: 1.0
After: ≈0.5

Cavity wear rate

-60%
Before: 1.0
After: ≈0.4

Dimensional stability

-40%
Before: 1.0
After: ≈0.6

Wear resistance, thermal-fatigue resistance, reduced soldering and fewer weld repairs.

Die Casting Molds

Injection Molds (cavities/cores/sliders)

Hardness & consistency (HRC)

Significant increase
Before: 40–45
After: 58–62

Dimensional consistency (defect rate)

-50%
Before: ≈6%
After: ≈3%

Shape retention (rework allowance)

-40%
Before: 1.0
After: ≈0.6

Surface condition

0% oxidation
Before: slight oxidation
After: bright/clean surface

Vacuum hardening, bright surface, low distortion, lower defect rate.

Die Casting Molds

Stamping Dies (punch/die/edge)

Edge durability (tool change interval)

+100–200%
Before: 1.0
After: 2.0–3.0

Chipping/crack risk

-50%
Before: 1.0
After: ≈0.5

Burr height

-40%
Before: 1.0
After: ≈0.6

Downtime for maintenance

-30%
Before: 1.0
After: ≈0.7

Wear–toughness balance, improved continuous production capability.

Die Casting Molds

General Hardware Parts (shafts, gears, etc.)

Service life / cycles

+100%
Before: 1.0
After: ≈2.0

Wear rate

-60%
Before: 1.0
After: ≈0.4

Fracture / early failure rate

-40%
Before: 1.0
After: ≈0.6

Corrosion resistance / surface condition

More stable
Before: baseline
After: stable surface

More durable, fewer replacements, lower total cost.

Heat Treatment Equipment for Mold & Metal Parts

Multiple machines to meet different product needs.

Heat Treatment Quality Inspection & Metallography

Heat Treatment Quality Inspection & Metallography

Metallographic prep, microscopes, hardness testers and OES analysis verify microstructure, hardness and material grade for every heat-treated batch.

Metallographic Specimen Cutting Machine

Metallographic Specimen Cutting Machine

Cuts heat-treated samples to size for metallographic examination.

Metallographic Mounting Press

Metallographic Mounting Press

Mounts small specimens in resin for easier grinding, polishing, and observation.

Metallographic Grinding & Polishing Machine

Metallographic Grinding & Polishing Machine

Grinds and polishes specimen surfaces to reveal the actual microstructure.

Rockwell Hardness Tester

Rockwell Hardness Tester

Measures the overall hardness of heat-treated mold steels and metal parts.

Inverted Metallurgical Microscope

Inverted Metallurgical Microscope

Observes grain size, carbides, and heat-treatment structures under magnification.

Micro Vickers Hardness Tester

Micro Vickers Hardness Tester

Performs microhardness tests and case-depth profiles on treated surfaces.

Optical Emission Spectrometer (OES)

Optical Emission Spectrometer (OES)

Analyzes steel chemistry to verify material grade and alloy content.

Frequently Asked Question

For more information, please contact us
What heat treatment services do you offer? +
We provide vacuum hardening, oil quenching, tempering, normalizing, annealing and stress relieving for mold steels and other tooling parts.
Which materials can you heat treat? +
We mainly process mold steels such as P20, 718, H13, S136, NAK80, SKD11, and related alloy steels. If you have another grade, send us the spec sheet and we will confirm.
What hardness range can you achieve? +
For tool and mold steels we typically reach 30–60 HRC depending on the grade and application. We will set the hardness window according to your drawing or standard.
How do you control deformation and cracking? +
We combine correct austenitizing temperatures, controlled quenching media (oil, air or gas), fixtures and tempering cycles to reduce distortion and avoid cracking, especially on large plates and complex parts.
Can you provide hardness and metallography reports? +
Yes. We can issue Rockwell hardness results, micro Vickers case-depth profiles, metallographic photos and material chemistry reports from our OES spectrometer, as needed.
Do you accept small batches or sample pieces? +
Yes. We accept one-piece samples and small trial batches so you can verify hardness, deformation and performance before placing volume orders.
What is the maximum part size you can handle? +
Our furnaces can handle medium to large mold plates and inserts. Please send the length, width, thickness and weight so we can confirm which furnace and process route are suitable.
How long is the heat treatment lead time? +
Standard heat treatment jobs are usually completed within 3–5 working days after parts arrive. Large volumes or special processes may take longer, and we will confirm the schedule when quoting.
How should I prepare drawings and requirements? +
Please provide 2D/3D drawings with material grade, required hardness, critical dimensions, surface finish and any special notes on distortion control or clamping directions.
Can you handle machining before or after heat treatment? +
Yes. We can rough machine before heat treatment and finish machine after hardening, so you receive ready-to-assemble mold components if needed.
Scroll to Top