AISI Type 651 (19-9) Stainless Steel annealed at 980°C (1800°F), 88 HRB hardness, tested at 815°C


Subcategory: Ferrous Metal; Heat Resisting; Metal; Stainless Steel; T 600 Series Stainless Steel

Key Words: UNS K63198, AMS 5369, AMS 5526, AMS 5527, AMS 5720, AMS 5721, AMS 5722, ASTM A453, ASTM A457, ASTM 458, ASTM A477, SAE J467(19-9 DL), MIL SPEC MIL-S-46042

Component   Wt. %
C0.28 - 0.35 
Cr18 - 21 
CuMax 0.5 
Fe64 
Mn0.75 - 1.5 
Component   Wt. %
Mo1 - 1.75 
Nb0.25 - 0.6 
Ni8 - 11 
PMax 0.04 
Component   Wt. %
SMax 0.03 
Si0.3 - 0.8 
Ti0.1 - 0.35 
W1 - 1.75 

Material Notes:
0.89-1.33 mm thick sheet

Physical PropertiesMetricEnglishComments
Density7.94 g/cc0.287 lb/in³ Room Temp.

Mechanical Properties
Tensile Strength, Ultimate234 MPa33900 psi 
Tensile Strength, Yield172 MPa24900 psi at 0.2% offset
Elongation at Break47 %47 % in 50 mm
Machinability45 %45 % Based on 100% machinability for AISI 1212 steel.

Thermal Properties
CTE, linear 20°C15.3 µm/m-°C8.5 µin/in-°F at 21-93°C (70-200°F), 16.3 µm/m°C at 21-205°C (70-400°F)
CTE, linear 250°C16.7 µm/m-°C9.28 µin/in-°F at 21-315°C (70-600°F), 17.3 µm/m°C at 21-425°C (70-800°F)
CTE, linear 500°C17.6 µm/m-°C9.78 µin/in-°F at 21-540°C (70-1000°F), 18.0 µm/m°C at 21-815°C (70-1500°F)
Specific Heat Capacity0.42 J/g-°C0.1 BTU/lb-°F from 0-100°C (32-212°F)
Thermal Conductivity13.5 W/m-K93.7 BTU-in/hr-ft²-°F at 21°C, 18.5 W/m-K at 425°C, 21.3 W/m-K at 650°C
Melting Point1420 - 1435 °C2590 - 2620 °F 
Solidus1420 °C2590 °F 
Liquidus1435 °C2620 °F 
Maximum Service Temperature, Air780 °C1440 °F Continuous Service
Maximum Service Temperature, Air955 °C1750 °F Intermittent Service

References for this datasheet.


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