The Sousa Corp.

"for the Best in Heat Treating"

 

WATER HARDENING TOOL STEELS HIGH CARBON-HIGH CHROME TYPES
SHOCK RESISTING TOOL STEELS HOT WORK TOOL STEELS
COLD WORK TOOL STEELS TUNGSTEN BASE TYPES I
OIL HARDENING TYPES CHROME BASE TYPES
SPECIAL PURPOSE TOOL STEELS HIGH SPEED TOOL STEELS
LOW ALLOY TYPES TUNGSTEN BASE TYPES II
MEDIUM ALLOY AIR HARDENING TYPES MOLYBDENUM BASE TYPES

Data Taken From SAE J437a

SAE STEEL DESIGNATION NON- DEFORMING PROPERTIES SAFETY IN HARDENING DEPTH OF HARDENING (a) TOUGHNESS RESISTANCE TO SOFTENING EFFECT OF HEAT WEAR RESIST- ANCE MACHIN- ABILITY
WATER HARDENING TOOL STEELS  [UP]              
W108 POOR FAIR SHALLOW GOOD (b) POOR FAIR BEST
W109 POOR FAIR SHALLOW GOOD (b) POOR FAIR BEST
W110 POOR FAIR SHALLOW GOOD (b) POOR GOOD BEST
W112 POOR FAIR SHALLOW GOOD (b) POOR GOOD BEST
W209 POOR FAIR SHALLOW GOOD POOR FAIR BEST
W210 POOR FAIR SHALLOW GOOD POOR GOOD BEST
W310 POOR FAIR SHALLOW GOOD POOR GOOD BEST
               
SHOCK RESISTING TOOL STEELS   [UP]              
S1- CHROME- TUNGSTEN FAIR GOOD MEDIUM GOOD FAIR FAIR FAIR
S2- SILICON- MOLYBDENUM W POOR (c) W POOR (c) MEDIUM BEST FAIR FAIR GOOD
  O FAIR (c) O GOOD (c)          
S5- SILICON- MANGANESE W POOR (c) W POOR (c) MEDIUM BEST FAIR FAIR FAIR
  O FAIR (c) O GOOD (c)          
               
COLD WORK TOOL STEELS   [UP]              
OIL HARDENING TYPES   [UP]              
O1- LOW MANGANESE GOOD GOOD MEDIUM FAIR POOR GOOD GOOD
02- HIGH MANGANESE GOOD GOOD MEDIUM FAIR POOR GOOD GOOD
O6- MOLYBDENUM GRAPHITIC FAIR GOOD MEDIUM FAIR POOR GOOD BEST
MEDIUM ALLOY AIR HARDENING TYPES   [UP]              
A2-5% CHROME AIR HARD BEST BEST DEEP FAIR FAIR GOOD FAIR
HIGH CARBON-HIGH CHROME TYPES   [UP]              
D2-HIGH CARBON- HIGH CHROME (AIR) BEST BEST DEEP FAIR FAIR BEST POOR
D3-HIGH CARBON- HIGH CHROME (OIL) GOOD GOOD DEEP POOR FAIR BEST POOR
D5-HIGH CARBON- HIGH CHROME- BEST BEST DEEP FAIR FAIR BEST POOR
COBALT              
D7- HIGH CARBON- HIGH CHROME- BEST BEST DEEP POOR FAIR BEST POOR
HIGH VANADIUM              
               
SAE STEEL NON- SAFETY IN DEPTH OF TOUGHNESS RESISTANCE TO WEAR MACHIN- ABILITY
DESIGNATION DEFORMING HARDENING HARDENING   SOFTENING RESIST-  
  PROPERTIES   (a)   EFFECT OF HEAT ANCE  
               
HOT WORK TOOL STEELS   [UP]              
CHROME BASE TYPES   [UP]              
H11- CHROME- MOLYBDENUM- V GOOD GOOD DEEP GOOD GOOD FAIR FAIR
H12- CHROME- MOLYBDENUM- GOOD GOOD DEEP GOOD GOOD FAIR FAIR
H13- CHROME- MOLYBDENUM- VV GOOD GOOD DEEP GOOD GOOD FAIR FAIR
TUNGSTEN BASE TYPES I   [UP]              
H21- TUNGSTEN GOOD GOOD DEEP GOOD GOOD FAIR FAIR
               
HIGH SPEED TOOL STEELS   [UP]              
TUNGSTEN BASE TYPES II   [UP]              
T1- TUNGSTEN 18-4-1 GOOD GOOD DEEP POOR GOOD GOOD FAIR
T2- TUNGSTEN 18-4-2 GOOD GOOD DEEP POOR GOOD GOOD FAIR
T4- COBALT- TUNGSTEN 18-4-1-5 GOOD FAIR DEEP POOR BEST GOOD FAIR
T5- COBALT- TUNGSTEN 18-4-2-8 GOOD FAIR DEEP POOR BEST GOOD FAIR
T8- COBALT- TUNGSTEN 18-4-2-5 GOOD FAIR DEEP POOR BEST GOOD FAIR
MOLYBDENUM BASE TYPES   [UP]              
M1- MOLYBDENUM 8-2-1 GOOD FAIR DEEP POOR GOOD GOOD FAIR
M2- MOLYBDENUM- TUNGSTEN 6-6-2 GOOD FAIR DEEP POOR GOOD GOOD FAIR
M3- MOLYBDENUM- TUNGSTEN 6-6-3 GOOD FAIR DEEP POOR GOOD BEST FAIR
M4- MOLYBDENUM- TUNGSTEN 6-6-4 GOOD FAIR DEEP POOR GOOD BEST FAIR
               
SPECIAL PURPOSE TOOL STEELS   [UP]              
LOW ALLOY TYPES   [UP]              
L6- NICKEL- CHROME FAIR GOOD MEDIUM FAIR POOR FAIR FAIR
L7- CHROME FAIR GOOD MEDIUM FAIR POOR GOOD FAIR
(a) These are intended to emphasize major differences between the groups of steels and do not account for the minor differences in depths of hardening that exist between steels of the same group. This is particularly true of the Water Hardening W Steels which are frequently furnished with varying degrees of hardenability as listed in Table 1.
(b) Toughness decreases somewhat with increasing depth of hardening.
(c) W as shown here indicates water quench. O as shown here indicates oil quench.