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S5  S7



AISI S5

S5 is an oil-hardening silicon-manganese steel of medium carbon content especially adapted for punches, shear blades, chisels, and other shock resisting applications. S5 is therefore applicable where the properties of silicon-manganese steels are desired in combination with well-known advantages of oil-hardening steels. A reduced tendency to distort or crack in heat treatment is accordingly combined with high toughness in S5.

WEARRESISTANCE

LowtoMedium

TOUGHNESS

Highest

RESISTANCETOSOFTENINGEFFECT OF
ELEVATEDTEMPERATURE

Low

DEPTHOFHARDENING

Medium

MACHINABILITY

MediumtoHigh

GRINDABILITY

MediumtoHigh

DISTORTIONINHEAT TREATING

Medium

SAFETY INHARDENING

High

RESISTANCETODECARBURIZATION

Low



TYPICAL ANALYSIS

Carbon (C)

.50/.65

Manganese(Mn)

.60/1.00

Silicon(Si)

1.75/2.25

Tungsten(W)

Molybdenum(Mo)

.20/1.35

TYPE S5 (UNS T41905)

Chromium (Cr)

.30 max

Vanadium (V)

.35 max

Colbalt (Co)

AISI S7

AISI S7 is a general purpose air-hardening tool steel with high impact and shock resistance. It has good resistance to softening at moderately high temperatures. This combination of properties makes it suitable width=100% for many hot work and cold work applications. Excellent combination of high strength and toughness. Useful in moderate hot work as well as cold work work tooling. Added size stability when air hardened.

TYPICALAPPUCATIONS

Bull Riviters, Concrete Breakers (Moll Points), Riveting Dies, Powder Metal Dies, Notching Dies, Dowels, Drills, Drill Plates, Hubs, Plastic Mold Dies, Cold Forming Dies, Blanking Dies, Bending Dies, and Master Hobs.

WEARRESISTANCE

LowtoMedium

TOUGHNESS

VeryHigh

RESISTANCETOSOFTENINGEFFECT OF
ELEVATEDTEMPERATURE

High

DEPTHOFHARDENING

MediumtoDeep

MACHINABILITY

MediumtoHigh

GRINDABILITY

MediumtoHigh

DISTORTIONINHEAT TREATING

A:Lowest/0:Low

SAFETY INHARDENING

A:Highest/0:High

RESISTANCETODECARBURIZATION

Medium



TYPICAL ANALYSIS

Carbon (C)

.45/.55

Manganese(Mn)

.20/.80

Silicon(Si)

.20/1.00

Tungsten(W)

Molybdenum(Mo)

1.30/1.80

TYPE S7 (UNS T41906)

Chromium (Cr)

3.00/3.50

Vanadium (V)

.30 max

Colbalt (Co)

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