Comparison Charts



Rockwell Hardness Conversion Chart
This chart provides an easy reference for the conversion of Brinell hardness to Rockwell C-scale hardness, which is commonly used for the measurement of the hardness of tool steel.

Tool Steel Tensile Strength
Tensile strength is the amnount of pressure that tool steel will carry before it fails. This chart shows the approximate tensile strength of tool steel at given hardnesses.


Conventional Tool Steel Comparison Chart

Conventional Tool Steel Comparison Chart, O-1, L-6, A-2, D-2, S-7, H-13


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A Comparison Chart comparing the toughness, wear resistance and hardness of the conventional tool steels of O-1, L-6, A-2, D-2, S-7 and H-13




PM Tool Steel Comparison Chart

PM Tool Steel Comparison Chart, CPM 3V, Vanadis 4, Z-Wear PM, M-4, A-11, A-11LV



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A Comparison chart comparing the toughness, wear resistance and hardness of A-11, A-11LV, CPM® 3V®, Z-Wear PM®, M-4 and Vanadis® 4




High Speed Steel Comparison Chart

High Speed Steel Comparison Chart, M-2, PM M-4, M-42, PM M-48, PM T-15



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A Comparison chart comparing the toughness, wear resistance, hardness and red hardness (resistance to softening) of high speed steel grades of M-2, PM M-4, M-42, PM M-48 and PM T-15


Stainless and Mold Steel Comparison Chart

Stainless and Mold Steel Comparison Chart


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This is a comparison chart that compares the toughness, wear resistance, hardness and corrosion resistance of the common stainless and mold grades of 420 ESR, 440C, D-2, H-13 ESR and S-7 ESR.

STS cutting tool store



Knife Steel Comparison Chart

Comparison chart comparing CPM S30V, CPM S90V, 440C, CPM 154, 420HC, M390 and D-2 steel suitable for knife making


(Click on the image for a larger version)
This is a comparison chart comparing the wear resistance, toughness and corrosion resistance of CPM S30V, CPM 154, 420HC, 440C, M390, D-2, CPM S35VN and CPM S90V steels suitable for knife making.

Temperature color guide


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This is a temperature color chart used to determine the temperature of heated steel

CPM® and 3V® are registered trademarks of Crucible Industries, LLC
Vanadis® is a registered trademark of Uddeholm Corporation
Z-Wear PM® is a registered trademark of Zapp Tooling Alloys

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