DIN 1.2311
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DIN 1.2311

It offers excellent machinability, high toughness, and uniform hardness, making it suitable for molds requiring stable performance and long service life.

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Product Introduction

DIN 1.2311 Pre-hardened Plastic Mold Steel – Excellent Machinability & Uniform Structure for General Molds

SWP20H is a versatile pre-hardened plastic mold steel designed for medium and large plastic injection molds.
It offers excellent machinability, high toughness, and uniform hardness, making it suitable for molds requiring stable performance and long service life.
Thanks to its refined alloy composition and consistent heat treatment, SWP20H ensures smooth cutting, stable EDM processing, and high-quality mold finishing.

Product Parameters (Specification)

Property	Description
Material Type	Pre-hardened plastic mold steel
Hardness	HRC 29–34
Density	7.85 g/cm³
Surface Condition	Machined / Polished / Etching available
Heat Treatment	Supplied pre-hardened, can be nitrided or chrome-plated
Application	General-purpose molds for automotive parts, consumer products, and appliances

Product Features & Applications

Excellent Machinability

Allows high-speed milling and EDM processing without cracking or deformation.

Uniform Hardness & Microstructure

Ensures dimensional stability in large mold blocks.

Good Polishing & Etching Properties

Suitable for medium-gloss mold surfaces and decorative textures.

High Toughness & Durability

Provides long tool life and reduced maintenance frequency.

Wide Application Range

Ideal for automotive components, home appliance molds, and general plastic molds.

Product Details

SWP20H is manufactured through advanced refining, forging, and uniform pre-hardening treatment to achieve a dense and balanced structure.

The steel exhibits stable hardness and excellent cutting performance, suitable for CNC machining and polishing applications.

Its consistent internal quality and toughness make SWP20H one of the most widely used mold steels for standard injection molds and functional plastic components.

Product Qualification

Produced under ISO 9001:2015 certified quality control system.
100% ultrasonic and hardness inspected before delivery.
Manufactured using vacuum degassing and homogenized forging technology.
Equivalent to AISI P20 / DIN 1.2311 mold steel grades.

FAQ

Q1: What is the hardness range of SWP20H?

It is supplied in pre-hardened condition at HRC 30–34.

Q2: Can SWP20H be nitrided or chrome-plated?

Yes, both surface treatments can enhance wear resistance and corrosion protection.

Q3: What are the typical applications of this steel?

It is suitable for injection molds of consumer goods, automotive parts, and appliance housings.

Q4: How does SWP20H compare to standard P20 steel?

SWP20H offers more stable hardness uniformity and better machinability compared with conventional P20.

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P20 Mould Steel

DIN 1.2343