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COMSOL CD

AISI Type 420 Stainless Steel, tested at 205°C (400°F)

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Subcategory: Ferrous Metal; Heat Resisting; Metal; Stainless Steel; T 400 Series Stainless Steel

Key Words: UNS S42000, AMS 5506, AMS 5621, ASTM A276, ASTM A314, ASTM A473, ASTM A580, FED QQ-S-763, FED QQ-S-766, FED QQ-W-423, MIL SPEC MIL-S-862, SAE J405 (51420), B.S. 420 S 37, B.S. CDS-18 (U.K), martensitic, DIN 1.4021, AFNOR Z 20 C 13 (Fr), UNI X 20 Cr 13, JIS SUS 420 J1, SS14 2303 (Sweden), ISO 683/13 4

Component   Wt. %
CMin 0.15 
Cr13 
Fe85 
MnMax 1 
PMax 0.04 
SMax 0.03 
SiMax 1 

Material Notes:
16.0 mm diameter bar, austenitized at 980°C for 30 minutes, oil quench, temper for 2 hours at 28°C above test temperature

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Physical PropertiesMetricEnglishComments
Density7.8 g/cc0.282 lb/in³ 

Mechanical Properties
Hardness, Brinell506506 Converted from Rockwell C Hardness
Hardness, Knoop562562 Converted from Rockwell C Hardness
Hardness, Rockwell C51.551.5 before testing, 51 after
Hardness, Vickers541541 Converted from Rockwell C Hardness
Tensile Strength, Ultimate1820 MPa264000 psi 
Tensile Strength, Yield1085 MPa157000 psi at 0.2% offset
Elongation at Break11.5 %11.5 % in 50 mm
Charpy Impact100 J73.8 ft-lb annealed (tested at room temperature), 14 J quenched and tempered (tested at room temperature)
Shear Modulus80.7 GPa11700 ksi 

Electrical Properties
Electrical Resistivity5.5e-005 ohm-cm5.5e-005 ohm-cm at 20°C

Thermal Properties
CTE, linear 20°C10.3 µm/m-°C5.72 µin/in-°F from 0-100°C (32-212°F)
CTE, linear 250°C10.8 µm/m-°C6 µin/in-°F at 0-315°C (32-600°F)
CTE, linear 500°C11.7 µm/m-°C6.5 µin/in-°F 0-540°C, 12.2 at 0-650°C
Specific Heat Capacity0.46 J/g-°C0.11 BTU/lb-°F from 0-100°C (32-212°F)
Thermal Conductivity24.9 W/m-K173 BTU-in/hr-ft²-°F at 100°C
Melting Point1455 - 1510 °C2650 - 2750 °F 
Solidus1455 °C2650 °F 
Liquidus1510 °C2750 °F 
Maximum Service Temperature, Air620 °C1150 °F Continuous Service
Maximum Service Temperature, Air735 °C1360 °F Intermittent Service
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References for this datasheet.


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