BAR STOCK

TOOL STEEL
AISI S5

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AISI S5 Shock Resistant Tool Steel


DESCRIPTION
An electric furnace, high quality shock resisting steel. Developed originally to meet the need for a shock-resisting steel which combines great ductility with high hardness.

ADVANTAGES


•Maximum shock-resistance for hardness under Rockwell ..C-59
•Good wear-resistance
•Hardens in either oil or water


TYPICAL ANALYSIS


CARBON …………0.60 MANGANESE …………0.70

SILICON …………1.85 MOLYBDENUM ……...…0.50

VANADIUM ………………..0.25

HEAT TREATMENT

FORGING ....1850°F to 1950°F, stop at 1650°F and cool slowly

NORMALIZING ….....Do not normalize

ANNEALING ………1450°F, furnace cool. Brinell 229

HARDENING ………1625°F oil-quenched; 1550°F, water quench to 150°F

TEMPERING ……....400°F to 650°F, Rockwell C-61-57

MACHINABILITY


Machines without great difficulty when annealed to a maximum of 229 Brinell. Has a rating of 65 as compared with a one percent carbon tool steel which has a rating of 100.

TEMPERING RESULTS


Normal tempering procedure is to hold at temperature for at least 1 hour for each inch of greatest thickness. Tempering temperatures will normally be between 400 and 650F, depending on the service desired. The resulting Rockwell C hardness for oil-and water-quenching and tempering from 300 to 1300F by 100-degree intervals are as follows:

Hardness Rockwell C
Tempering
Temperatures °F Oil-quenched
1600°F Water-quenched
1600°F
300 63 63
400 61 61
500 60.5 60
600 59 59
700 57.5 57.5
800 53 53.5
900 51 51
1000 49 48
1100 47 45
1200 40.50 40
1300 33.50 30

Results may be used as a guide in tempering tools to desired hardness. However, since ¾-in. diameter specimens were used in the test, tools of heavy section or mass may be several points lower in Rockwell hardness a given treatment.

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Plate Burning
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Up to 16'
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Up to 120"
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