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Rulon Bearings

Cast Stainless Steel HH, ACI
Categories: Metal; Ferrous Metal; Stainless Steel; Cast Stainless Steel

Material Notes: Heat resistant

Type I: ferrite in austenite
Type II: fully austenitic

Key Words: ASTM A 447
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Mechanical PropertiesMetricEnglishComments
Hardness, Brinell 180180type II
 185185type I
Tensile Strength, Ultimate 550 MPa79800 psitype II
 585 MPa84800 psitype I
Tensile Strength, Yield 275 MPa39900 psitype II
 345 MPa50000 psitype I
Elongation at Break 15 %15 %type II
 25 %25 %type I
Creep Strength  7.50 MPa
@Temperature 980 °C
1090 psi
@Temperature 1800 °F
type I
 14.5 MPa
@Temperature 980 °C
2100 psi
@Temperature 1800 °F
type II
 
Thermal PropertiesMetricEnglishComments
CTE, linear  17.1 µm/m-°C
@Temperature 21.0 - 540 °C
9.50 µin/in-°F
@Temperature 69.8 - 1000 °F
type I & II
 19.3 µm/m-°C
@Temperature 21.0 - 1090 °C
10.7 µin/in-°F
@Temperature 69.8 - 1990 °F
type I & II
Thermal Conductivity  14.2 W/m-K
@Temperature 100 °C
98.5 BTU-in/hr-ft²-°F
@Temperature 212 °F
type I & II
 20.8 W/m-K
@Temperature 540 °C
144 BTU-in/hr-ft²-°F
@Temperature 1000 °F
type I & II
 30.3 W/m-K
@Temperature 1090 °C
210 BTU-in/hr-ft²-°F
@Temperature 1990 °F
type I & II
 
Component Elements PropertiesMetricEnglishComments
Carbon, C 0.20 - 0.50 %0.20 - 0.50 %
Chromium, Cr 24 - 28 %24 - 28 %
Iron, Fe 52.9 - 64.8 %52.9 - 64.8 %As remainder
Manganese, Mn <= 2.0 %<= 2.0 %
Molybdenum, Mo <= 0.50 %<= 0.50 %
Nickel, Ni 11 - 14 %11 - 14 %
Phosphorus, P <= 0.040 %<= 0.040 %
Silicon, Si <= 2.0 %<= 2.0 %
Sulfur, S <= 0.040 %<= 0.040 %

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