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QuesTek® Innovations Ferrium® S53® Corrosion Resistant High Strength Steel for Aerospace Structural Applications

Category Metal , Ferrous Metal , Alloy Steel
Manufacturer QuesTek® Innovations
Trade Name Ferrium®
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF QuesTek® Innovations Ferrium® S53® Corrosion Resistant High Strength Steel for Aerospace Structural Applications.pdf
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Material Notes:
Description: Ferrium® S53® is a corrosion resistant ultra high-strength steel for structural aerospace applications. Ferrium® S53® was designed to provide mechanical properties equal to, or better than, conventional ultrahigh-strength steels such as 300M and SAE 4340 with the added benefit of general corrosion resistance. This eliminates the need for cadmium coating processes, which are environmentally unfriendly and require subsequent hydrogen bake-out operations in order to avoid hydrogen embrittlement. Ferrium® S53® has a greatly improved resistance to stress-corrosion cracking (SCC) over 300M and SAE 4340. Ferrium® S53® utilizes an efficient M2C strengthening dispersion precipitated through tempering while avoiding other carbides. This maximizes strength, wear resistance, and toughness; resulting in a unique combination of mechanical properties for a corrosion resistant steel. Ferrium® S53® uses a stable passive oxide film for optimum corrosion resistance. It also has high hardenability, permitting less severe quench conditions for a given section size and resulting in less distortion during heat treatment. S53® should be considered for use in applications requiring high strength with good fracture toughness, corrosion resistance and high resistance to stress-corrosion cracking (per ASTM F1624). S53® is supplied in a normalized and annealed condition. The dimensional change upon hardening from the annealed condition is approximately 0.003 in./in.Typical Applications: Aircraft landing gears, flap tracks, actuators, fasteners and other structural applications.Workability:Fording: Forge at 2050°F (1121°C) followed by an air cool, normalize, subzero treatment and anneal.Machinaility: Annealed Ferrium® S53® has machinabilty similar to 300M at 35 HRC.Passivation: Passivation in a 50% nitric acid solutions recommended for maximum corrosion resistance per AMS 2700B, Method 1Heat Treatment:Solution Treatment: 1985°F(1085°C) 1 hour and oil quench or equivalent, water quenching is not recommended. Soak time must be closely monitored, load couples are recommended.Sub Zero Treatment: Following the solution treatment, -100°F(-73°C), 1 hour and air warm.Tempering: 934°F (501°C), 3 hours and oil quench or equivalent followed by -100°F(-73°C), 1 hour and air warm then a second temper at 900°F(482°C) 12 hours and air cool.Other Key PropertiesCorrosion resistance has been measured using a variety of test methods. General corrosion resistance of S53® is similar to 440C.Fatigue testing at a number of R values and stress levels has shown equivalent performance to typical 300M values.S53® yields a Class A Weld. Welding studies have shown minimal impact on mechanical properties.Product Forms: Ferrium® S53® may be manufactured in typical ingot, bar, and billet forms. Sheet and plate also available upon request.Ferrium is designed by Questek Innovations, LLC. and is manufactured by Latrobe Specialty Steel under license.
Physical Properties Metric English Comments
Density 7.98 g/cc
0.288 lb/in³
Mechanical Properties Metric English Comments
Hardness, Rockwell C 54
54
typical
Tensile Strength at Break >= 1930 MPa
>= 280000 psi
Tensile Strength, Ultimate 1990 MPa
288000 psi
Typical
Tensile Strength, Yield >= 1470 MPa

@Strain 0.200 %
>= 213000 psi

@Strain 0.200 %
1550 MPa

@Strain 0.200 %
225000 psi

@Strain 0.200 %
Elongation at Break >= 11 %
>= 11 %
15 %
15 %
Reduction of Area 55 %
55 %
Transverse
57 %
57 %
Flow
Modulus of Elasticity 204 GPa
29600 ksi
Tension
Compressive Yield Strength 1790 MPa
260000 psi
Ultimate Bearing Strength 3110 MPa
451000 psi
e/D = 1.5
4060 MPa
589000 psi
e/D = 2.0
Bearing Yield Strength 2550 MPa
370000 psi
e/D = 1.5
3120 MPa
452000 psi
e/D = 2.0
Fracture Toughness 71.4 MPa-m½
65.0 ksi-in½
Shear Strength 1250 MPa
181000 psi
Charpy Impact 24.4 J
18.0 ft-lb
V-notch
Thermal Properties Metric English Comments
CTE, linear 10.53 µm/m-°C

@Temperature 24.0 - 104 °C
5.850 µin/in-°F

@Temperature 75.2 - 219 °F
10.59 µm/m-°C

@Temperature 24.0 - 204 °C
5.883 µin/in-°F

@Temperature 75.2 - 399 °F
10.79 µm/m-°C

@Temperature 24.0 - 316 °C
5.994 µin/in-°F

@Temperature 75.2 - 601 °F
11.02 µm/m-°C

@Temperature 24.0 - 427 °C
6.122 µin/in-°F

@Temperature 75.2 - 801 °F
11.13 µm/m-°C

@Temperature 24.0 - 593 °C
6.183 µin/in-°F

@Temperature 75.2 - 1100 °F
11.18 µm/m-°C

@Temperature 24.0 - 538 °C
6.211 µin/in-°F

@Temperature 75.2 - 1000 °F
Specific Heat Capacity 0.452 J/g-°C

@Temperature 22.8 °C
0.108 BTU/lb-°F

@Temperature 73.0 °F
0.502 J/g-°C

@Temperature 200 °C
0.120 BTU/lb-°F

@Temperature 392 °F
0.561 J/g-°C

@Temperature 400 °C
0.134 BTU/lb-°F

@Temperature 752 °F
0.975 J/g-°C

@Temperature 580.0 °C
0.233 BTU/lb-°F

@Temperature 1076 °F
Thermal Conductivity 18.0 W/m-K

@Temperature 23.0 °C
125 BTU-in/hr-ft²-°F

@Temperature 73.4 °F
20.2 W/m-K

@Temperature 100 °C
140 BTU-in/hr-ft²-°F

@Temperature 212 °F
22.7 W/m-K

@Temperature 200 °C
158 BTU-in/hr-ft²-°F

@Temperature 392 °F
24.7 W/m-K

@Temperature 300 °C
171 BTU-in/hr-ft²-°F

@Temperature 572 °F
26.1 W/m-K

@Temperature 400 °C
181 BTU-in/hr-ft²-°F

@Temperature 752 °F
28.8 W/m-K

@Temperature 500 °C
200 BTU-in/hr-ft²-°F

@Temperature 932 °F
35.2 W/m-K

@Temperature 593 °C
244 BTU-in/hr-ft²-°F

@Temperature 1100 °F
Component Elements Properties Metric English Comments
Carbon, C 0.21 %
0.21 %
Chromium, Cr 10 %
10 %
Cobalt, Co 14 %
14 %
Iron, Fe 66.99 %
66.99 %
Molybdenum, Mo 2.0 %
2.0 %
Nickel, Ni 5.5 %
5.5 %
Tungsten, W 1.0 %
1.0 %
Vanadium, V 0.30 %
0.30 %
Chemical Properties Metric English Comments
Critical Temperature 100 °C
212 °F
Ms
740 °C
1360 °F
Ac1
780 °C
1440 °F
Ac2
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