Tool Steel Material, Properties and Specifications

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Metals and Materials Table of Contents

These tool steels, which include hot or cold finished bar, plate, sheet, strip, rod, wire, or forgings, are normally fabricated into tools, dies, or fixtures. The selection of a material for a particular application will depend upon design, service conditions, and desired properties.

Rod and Plate Tool Steels

AISI SAE 0-1
This is an electric furnace melt oil hardening tool steel. A non-shrinking general purpose tool steel, it has excellent abrasion resistance, toughness and machinability characteristics.
Analysis C .85-1.00, Mn 1.00-1.40, Si .50, Max, Cr. .40-.60, W.40-.60 Max.

AISI SAE A-2
Fine grain, electric furnace air hardening, 5% chrome tool steel.  It is a superior quality steel which has excellent wear and abrasion resistance properties.
Analysis C.95-1.25, Mn 1.00 Max, Cr 4.75-5.50, Mo .90-1.4, V.15-.50

AISI SAE W-1
W-1 water hardening is the most popular, versatile, and least expensive grade of tool steel. Its high carbon content allows it to be used often without heat treatment for maintenance applications. It is a fine grained electric furnace melted commercial grade tool steel which is supplied in the fully spheroidized 100% decarb free condition.
Analysis C .95-1.05, Mn .30-.40, Si .10-.25

AISI SAE S-7
S-7 Hi-shock tool steel is an excellent chock steel that can be and is often used in hot work applications where the tool temperature does not exceed 1000 deg. F.  This tool steel combines the qualities of high strength and good ductility for cold and medium hot work application.
Analysis C .45-.55, Mn .20-.80, Si .20-1.00, Cr 3.0-3.5, V .20-.30, Mo 1.30-1.80

AISI SAE D-2
Fine quality, air hardened, electric furnace melt tool steel. The combination of superior abrasion resistance and toughness found in D-2 results from its high carbon and high chromium composition. High chrome is an extraordinary tool steel that can be specified for the most demanding applications. This is  non-free machining tool steel.
Analysis C 1.40-1.60, Mn .60 Max, Cr 11.00-13.00, V 1.10 Max, Mo .70-1.20, Co 100 Max

H13 An excellent hot work steel with an outstanding combination of shock resistance, red hardness, and abrasion resisting properties. Especially suitable as a die steel for aluminum and magnesium die casting.

420ESR High chromium stainless steel grade - an air or oil hardening mold steel having superior internal cleanliness combined with good corrosion resistance. Supplied in the Annealed Condition P20 is a prehardened, general purpose mold steel suitable for production of machined or EDM'd plastic mold and zinc die casting die components. Marshalloy MQ Mold quality steel supplied in the prehardened condition. A uniform product with exceptional cleanliness able to be polished to an extremely high finish required for plastic molding. The balanced alloy composition ensures a uniform cross-sectional hardness similar to P20

4140HT Direct hardening alloy steel that can be quenched and tempered to obtain a wide range of hardness, ductility and strength levels. DECARB FREE Mill finished, free from “mill scale,? and ready to use

Maximum Brinell Hardness in Annealed or Cold Drawn Condition

Type
Annealed BHN
Cold Drawn BHN
Type
Annealed BHN
Cold Drawn BHN
H10
229
255
O1
212
241
H11
235
262
O2
217
241
H12
235
262
O6
229
241
H13
235
262
O7
241
255
H14
235
262
H19
241
262
S1
229
255
H21
235
262
S2
217
241
H22
235
262
S4
229
255
H23
255
269
S5
229
255
H24
241
262
S6
229
255
H25
235
262
S7
229
255
H26
241
262
L2
197
241
H41
235
262
L3
201
241
H42
235
262
L6
235
262
H43
235
262
F1
207
241
A2
248
262
F2
235
262
A3
229
255
A4
241
262
P2
100
. . .
A6
248
262
P3
143
. . .
A7
269
285
P4
131
. . .
A8
241
262
P5
131
. . .
A9
248
262
P6
212
. . .
A10
269
285
P20
A
...
P21
A
...
D2
255
269
-
-
...
D3
255
269
-
-
...
D4
255
269
-
-
...
D5
255
269
-
-
...
D7
262
277
-
-
...

 

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