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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