AISI H13 Steel
AISI H13 Steel suppliers

AISI H13 Steel

AISI H13 Steel is a premium hot work tool steel widely used in tooling applications that require high thermal fatigue resistance, excellent toughness, and stable hardness under elevated temperatures.

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Product Introduction

AISI H13 Hot Work Tool Steel – High Toughness, Excellent Thermal Fatigue Resistance & Superior Hardness

AISI H13 Steel is a premium hot work tool steel widely used in tooling applications that require high thermal fatigue resistance, excellent toughness, and stable hardness under elevated temperatures.

With its chromium–molybdenum–vanadium alloy composition and superior heat treatment response, AISI H13 Steel provides outstanding wear resistance and dimensional stability, making it a preferred choice for die casting, hot forging, extrusion dies, and high-temperature plastic molds.

Product Parameters (Specification)

Property	Description
Material Type	Hot work tool steel
Hardness	HRC 48–52 (after vacuum quenching & tempering)
Working Temperature	Up to 600°C (continuous hot work)
Microstructure	Tempered martensite with uniform carbides
Heat Treatment	Vacuum hardening + double/ triple tempering
Application	Die casting molds, hot forging dies, extrusion dies, high-temperature injection molds

Product Features & Applications

Excellent Thermal Fatigue Resistance

AISI H13 withstands repeated heating and cooling cycles, making it ideal for die casting and hot forging.

High Toughness & Crack Resistance

Superior impact resistance reduces cracking in demanding thermal and mechanical environments.

Stable Hardness Under Heat

Maintains high strength and wear resistance even at elevated operating temperatures.

Excellent Machinability After Heat Treatment

Supports precision machining, EDM finishing, and polishing with minimal distortion.

Wide Application Range

Commonly used for aluminum die casting dies, hot forging hammer dies, extrusion tooling, and high-temperature plastic molds.

Product Details

AISI H13 is produced using advanced smelting techniques such as ESR remelting or vacuum degassing, resulting in a clean, homogeneous microstructure.

After vacuum quenching and precision tempering, AISI H13 delivers excellent toughness and wear resistance, making it suitable for tooling subjected to intense thermal shock and mechanical stress.

The balanced alloy composition ensures low distortion, uniform hardness, and long service life in hot work environments.

Product Qualification

Manufactured under ISO 9001:2015 quality system
ESR / Vacuum refined for high purity
100% ultrasonic inspection for internal soundness
Meets international standards: AISI H13 / DIN 1.2344 / JIS SKD61

FAQ

Q1: What hardness can AISI H13 achieve after heat treatment?

AISI H13 typically reaches HRC 48–52 after vacuum quenching and tempering.

Q2: Is AISI H13 suitable for die casting molds?

Yes. It offers excellent thermal fatigue resistance and toughness, making it ideal for die casting applications.

Q3: How does AISI H13 perform under high temperatures?

It maintains strength and wear resistance up to 600°C, suitable for prolonged hot work conditions.

Q4: What international grades correspond to AISI H13?

Equivalent to DIN 1.2344 and JIS SKD61.

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