Tool Steel - Comparison

Comparison

AISI-SAE tool steel grades
Defining property AISI-SAE grade Significant characteristics
Water-hardening W
Cold-working O Oil-hardening
A Air-hardening; medium alloy
D High carbon; high chromium
Shock resisting S
High speed T Tungsten base
M Molybdenum base
Hot-working H H1–H19: chromium base
H20–H39: tungsten base
H40–H59: molybdenum base
Plastic mold P
Special purpose L Low alloy
F Carbon tungsten

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Famous quotes containing the word comparison:

    But the best read naturalist who lends an entire and devout attention to truth, will see that there remains much to learn of his relation to the world, and that it is not to be learned by any addition or subtraction or other comparison of known quantities, but is arrived at by untaught sallies of the spirit, by a continual self-recovery, and by entire humility.
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