Improve Your Tooling Performance with MacLean Additive

Revolutionizing Tooling with
Proprietary L-40 Tool Steel Powder

MacLean Additive is pushing the boundaries of manufacturing with advanced 3D printing solutions powered by our proprietary L-40 tool steel powder. Our expertise in Laser Powder Bed Fusion (LPBF) technology delivers cutting-edge solutions for tooling, fixtures, and hot and cold forming dies that outperform traditional methods.

Why Choose MacLean Additive?

End-to-End Capabilities

From application development and design, to 3D printing and validation, leveraging MacLean-Fogg’s 100 years of manufacturing history.

High Hardness & Impact Resistant

Hardness of 45 +/- 2 HRC with 60 J Charpy Impact V-notch toughness.

Enhanced Performance & Longevity

Our solutions enable conformal cooling channels, reducing cycle times and extending tool life.

Crack-Resistant & Highly Printable

Unlike traditional tool steels such as H13, L-40 resists cracking even at larger sizes.

Eco-Friendly & Cobalt-Free

Designed for superior performance while being safer and more sustainable.

Versatile Heat Treatment Options

Can be carburized or nitrided to high hardness.

Featured Applications

Fixtures & Jigs

Optimized for strength, precision, and durability.

Forging Dies & Tooling

High-impact resistance, longer wear life.

Die Casting

Limits soldering issues and extends tool life.

L-40 Data

Stress Relieved Properties

Density (%)	99.9 +
Hardness Rockwell (HRC)	45 + / – 2
0.2% Offset Yield Strength (MPa)	1180
Ultimate Tensile Strength (MPa)	1430
Elongation (%)	15 +
Charpy Impact V-Notch (J)	60 +