Steel 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


(Click on the image for a larger version)
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

Get all of the answers to your tool steel questions in our comprehensive book "Knife Steel Simplified". This concise book, written specifically for knife makers in an easy-to-understand format includes tool steel properties, alloying elements, data sheets, heat treating and so much more. Improve your knife making skills, discover knife making tips of the pros, learn proper grinding of knife blades and proper heat treatment.

Your hobby has become your obsession. Fuel your obsession by reading “Knife Steel Simplified”.

For only $34.95, the cost of only one piece of knife steel, you will receive 152 pages of tool steel information devoted to the knife maker, engaged in the production of high-quality tool steel knives.

Click here to get your copy.

Sign up for our newsletter to keep updated with any changes on Simply Tool Steel and the steel industry.

PM Tool Steel Comparison Chart

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


(Click on the image for a larger version)
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


(Click on the image for a larger version)
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


(Click on the image for a larger version)
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.


Knife Steel Comparison Chart

You can find all of the answers to your tool steel questions in our comprehensive book "Tool Steel Simplified". This concise book includes tool steel properties, alloying elements, uses, careers, data sheets, heat treating and so much more. It is written is an easy-to-understand format for designers, engineers, buyers, students, production planners and anyone that is interested in learning more about tool steel.

Save Up To 35% on Trijicon Red Dot Sights Save Up To 37% on Trijicon Riflescopes

You have questions and you want answers. The answers to your tool steel questions are found in “Tool Steel Simplified”.

You will receive 226 pages of valuable tool steel information providing you with the resources necessary to produce high-quality tooling for your application.

Click here to get your copy

Keep up to date with tool steel news, updates and industry advancements. Sign up for our newsletter to stay informed.


(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


(Click on the image for a larger version)
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