DISC SPRING MATERIALS: CHEMICAL / PHYSICAL PROPERTIES

CHEMICAL CONTENT IN %

Material C

Carbon

SI

Silicon

Mn

Manganese

P

Phos-

phorus

S

Sulfur

AL

Alum-

inum

Cr

Chrom-

ium

Ni

Nickel

V

Vana-

dium

Fe

Iron

Cu

Copper

Ti

Titanium

Columbium

& Tantalum

C1075 .7-

.8

.25-

.5

.6-.8 .045 .045 - - - - - - - -
SAE6150 .47-

.55

.15-

.35

.8-

1.1

.035 .035 - .9-

1.2

- .07-

.12

- - - -
17/7PH

Armco RG. T.M.

<=.09 <=1.0 <=1.0 - - .75-

1.5

16.0-

18.0

6.5-

7.5

- - - - -
AISI 301 <=.12 <=1.0 <=2.0 - - - 16.0-18.0 7.0-9.0 - - - - -
INCONEL*

X-750

max

.08

max

.5

max

1.0

- max

0.01

.4-

1.0

14.0-

17.0

min

70.0

- 5.0-

9.0

max

.5

2.25-

2.75

.7-

1.2

*HUNTINGTON ALLOYS T.M.

 

MECHANICAL PROPERTIES OF DISC SPRINGS AFTER HEAT TREATMENT

Material Tensile

Strength

PSI

E-Modulus

(70° F)

PSI

Poisson's

Ratio µ

Temperature

Range °F

C1075 200-240,000 30·106 .30 300
SAE6150 200-240,000 30·106 .30 400
17/7 PH

*ARMCO

RG. T.M.

200-240,000 29·106 .28 -428/572
AISI 301 200-240,000 28·106 .29 -330/392
INCONEL

X-750

Consult Our

Engr Dept

31·106 .29 to 1200

*Depends on Thickness Range and if Delivered Hot Rolled or Cold Rolled

 

HARDNESS RANGES OF STAINLESS 301/302 (NOT HARDENABLE - WORK HARDENED ONLY)

¼ Hard

TS-125,000 psi min

or

Rc-25 min

½ Hard

TS-150,000 psi min

or

Rc-30 min

¾ Hard

TS-175,000 psi min

or

Rc-35 min

Full Hard

TS-185,000 psi min

or

Rc-40 min

 

LOAD CHANGE (DECREASE) (dP) VS. TEMPERATURE

  70° 400° 575° 750° 850°
Material E

psi·106

E

psi·106

dP

%

E

psi·106

dP

%

E

psi·106

dP

%

E

psi·106

dP

%

SAE6150 30 28.5 5 27.5 8.3 - - - -
AISI 301 28 24.9 9.8 - - - - - -
17/7 PH 28 24.4 6.2 23.2 10.8 - - - -

 

Inconel LOAD CHANGE (DECREASE) (dP) VS. TEMPERATURE

  70° 250° 500° 1000° 1200°
Temperature

Range

E E % dP E %dP E %dP E %dP
Inconel X750 psi·106 psi·106 - psi·106 - psi·106 - psi·106 -
  31 30.8 .6 28.7 7.4 25 19.4 23 25.8

delta P= dP= Load Change

E = Modulus of Elasticity

Note: Designation of al stainless disc springs are prefixed with 'S' in all cases customer must specify type stainless required by giving identification following the part no. e.g. 17/7 PH or 301, etc.

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