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AK Steel 13-4 SR® Ferritic Stainless Steel

Category	Metal , Ferrous Metal , Stainless Steel
Manufacturer	AK Steel
Trade Name
Port	Shanghai port,China
Trade Terms	FOB, CFR, CIF
Payment Terms	L/C, T/T, Western Union
Download PDF	AK Steel 13-4 SR® Ferritic Stainless Steel.pdf
Price	EMAIL US sales@lookpolymers.com
	Online Service lookpolymers 27660005

Material Notes:

AK Steel 13-4 SR Stainless Steel is a ductile weldable ferritic with 13% Cr and 3.75% Al. The high aluminum content results in a base alloy with high electrical resistivity. It is intended for use where electrical energy needs to be dissipated or heat is generated. Good oxidation resistance to 1800 °F (982 °C) permits applications at elevated temperatures. The alloy’s wet corrosion resistance is comparable to ferritic alloys Type 409 or Type 430.Information provided by AK Steel.

Physical Properties	Metric	English
Density	6.95 g/cc @Temperature 1230 °C	0.251 lb/in³ @Temperature 2250 °F
	7.00 g/cc @Temperature 1090 °C	0.253 lb/in³ @Temperature 2000 °F
	7.05 g/cc @Temperature 954 °C	0.255 lb/in³ @Temperature 1750 °F
	7.105 g/cc @Temperature 816 °C	0.2567 lb/in³ @Temperature 1500 °F
	7.15 g/cc @Temperature 677 °C	0.258 lb/in³ @Temperature 1250 °F
	7.195 g/cc @Temperature 538 °C	0.2599 lb/in³ @Temperature 1000 °F
	7.24 g/cc @Temperature 399 °C	0.262 lb/in³ @Temperature 750 °F
	7.285 g/cc @Temperature 260 °C	0.2632 lb/in³ @Temperature 500 °F
	7.33 g/cc @Temperature 121 °C	0.265 lb/in³ @Temperature 250 °F
	7.36 g/cc @Temperature -17.8 °C	0.266 lb/in³ @Temperature 0.000 °F

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell B	86	86
Tensile Strength, Ultimate	558 MPa	80900 psi	Longitudinal Orientation, True Stress/True Strain
	586 MPa	85000 psi	Transverse Orientation, True Stress/True Strain
Tensile Strength, Yield	421 MPa @Strain 0.200 %	61100 psi @Strain 0.200 %	Longitudinal Orientation, True Stress/True Strain
	448 MPa @Strain 0.200 %	65000 psi @Strain 0.200 %	Transverse Orientation, True Stress/True Strain
Elongation at Break	22 %	22 %	Transverse Orientation, In 2", True Stress/True Strain
	28 %	28 %	Longitudinal Orientation, In 2", True Stress/True Strain
Modulus of Rupture	0.00370 GPa @Temperature 871 °C, Time 3.60e+6 sec	0.537 ksi @Temperature 1600 °F, Time 1000 hour	Stress Rupture Strength
	0.00630 GPa @Temperature 871 °C, Time 360000 sec	0.914 ksi @Temperature 1600 °F, Time 100 hour	Stress Rupture Strength
	0.00830 GPa @Temperature 760 °C, Time 3.60e+6 sec	1.20 ksi @Temperature 1400 °F, Time 1000 hour	Stress Rupture Strength
	0.0159 GPa @Temperature 760 °C, Time 360000 sec	2.31 ksi @Temperature 1400 °F, Time 100 hour	Stress Rupture Strength
	0.0310 GPa @Temperature 649 °C, Time 3.60e+6 sec	4.50 ksi @Temperature 1200 °F, Time 1000 hour	Stress Rupture Strength
	0.0465 GPa @Temperature 649 °C, Time 360000 sec	6.74 ksi @Temperature 1200 °F, Time 100 hour	Stress Rupture Strength

Thermal Properties	Metric	English
CTE, linear	17.6 µm/m-°C @Temperature 100 °C	9.79 µin/in-°F @Temperature 212 °F
	19.1 µm/m-°C @Temperature 200 °C	10.6 µin/in-°F @Temperature 392 °F
	20.2 µm/m-°C @Temperature 300 °C	11.2 µin/in-°F @Temperature 572 °F
	20.97 µm/m-°C @Temperature 400 °C	11.65 µin/in-°F @Temperature 752 °F
	21.69 µm/m-°C @Temperature 500 °C	12.05 µin/in-°F @Temperature 932 °F
	22.28 µm/m-°C @Temperature 600.0 °C	12.38 µin/in-°F @Temperature 1112 °F
	22.7 µm/m-°C @Temperature 700.0 °C	12.6 µin/in-°F @Temperature 1292 °F
	23.38 µm/m-°C @Temperature 800.0 °C	12.99 µin/in-°F @Temperature 1472 °F
	24.05 µm/m-°C @Temperature 900.0 °C	13.36 µin/in-°F @Temperature 1652 °F
	24.59 µm/m-°C @Temperature 1000 °C	13.66 µin/in-°F @Temperature 1832 °F
Thermal Conductivity	13.7 W/m-K @Temperature 22.8 °C	95.1 BTU-in/hr-ft²-°F @Temperature 73.0 °F
	14.2 W/m-K @Temperature 50.0 °C	98.5 BTU-in/hr-ft²-°F @Temperature 122 °F
	15.0 W/m-K @Temperature 100 °C	104 BTU-in/hr-ft²-°F @Temperature 212 °F
	16.6 W/m-K @Temperature 200 °C	115 BTU-in/hr-ft²-°F @Temperature 392 °F
	18.2 W/m-K @Temperature 300 °C	126 BTU-in/hr-ft²-°F @Temperature 572 °F
	19.8 W/m-K @Temperature 400 °C	137 BTU-in/hr-ft²-°F @Temperature 752 °F
	20.5 W/m-K @Temperature 700.0 °C	142 BTU-in/hr-ft²-°F @Temperature 1292 °F
	22.8 W/m-K @Temperature 500 °C	158 BTU-in/hr-ft²-°F @Temperature 932 °F
	24.0 W/m-K @Temperature 800.0 °C	167 BTU-in/hr-ft²-°F @Temperature 1472 °F
	24.8 W/m-K @Temperature 900.0 °C	172 BTU-in/hr-ft²-°F @Temperature 1652 °F
	25.1 W/m-K @Temperature 600.0 °C	174 BTU-in/hr-ft²-°F @Temperature 1112 °F
	26.2 W/m-K @Temperature 1000 °C	182 BTU-in/hr-ft²-°F @Temperature 1832 °F

Component Elements Properties	Metric	English	Comments
Aluminum, Al	3.75 %	3.75 %
Carbon, C	0.025 %	0.025 %
Chromium, Cr	13 %	13 %
Iron, Fe	82 - 82.375 %	82 - 82.375 %	Balance
Manganese, Mn	0.30 %	0.30 %
Nickel, Ni	0.25 %	0.25 %
Phosphorous, P	<= 0.045 %	<= 0.045 %
Sulfur, S	<= 0.030 %	<= 0.030 %
Titanium, Ti	0.30 %	0.30 %

Descriptive Properties	Value	Comments
100 Hour Still Air Oxidation Resistance, Weight Gain (mg/cm2)	0.19	1600°F
	0.41	1800°F
	1.02	2000°F
	3.23	2200°F
Cyclic Oxidation Resistance 1550°-1600°F, Weight Change (mg/cm2)	0.12	100 cycles
	0.13	200 cycles
	0.17	300 cycles
	0.18	400 cycles
	0.18	500 cycles
n Value (10% -Ult)	0.147	Transverse Orientation,True Stress/True Strain
	0.167	Longitudinal Orientation, True Stress/True Strain

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