AISI Type 651 (19-9) Stainless Steel annealed at 980C (1800F), 88 HRB hardness, tested at 24C

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 
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/in 

Mechanical Properties
Tensile Strength, Ultimate752 MPa109000 psi 
Tensile Strength, Yield365 MPa52900 psi at 0.2% offset
Elongation at Break39 %39 % in 50 mm
Modulus of Elasticity200 GPa29000 ksi Typical for stainless steel
Charpy Impact72 J53.1 ft-lb V-Notch
Machinability45 %45 % Based on 100% machinability for AISI 1212 steel.

Thermal Properties
CTE, linear 20C15.3 m/m-C8.5 in/in-F at 21-93C (70-200F), 16.3 m/mC at 21-205C (70-400F)
CTE, linear 250C16.7 m/m-C9.28 in/in-F at 21-315C (70-600F), 17.3 m/mC at 21-425C (70-800F)
CTE, linear 500C17.6 m/m-C9.78 in/in-F at 21-540C (70-1000F), 18.0 m/mC at 21-815C (70-1500F)
Specific Heat Capacity0.42 J/g-C0.1 BTU/lb-F from 0-100C (32-212F)
Thermal Conductivity13.5 W/m-K93.7 BTU-in/hr-ft-F at 21C, 18.5 W/m-K at 425C, 21.3 W/m-K at 650C
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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