AISI Type 651 (19-9) Stainless Steel warm worked and stress relieved


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:
Charpy V-Notch Impact properties and hardness

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

Mechanical Properties
Hardness, Brinell311311 
Hardness, Knoop347347 Converted from Brinell hardness.
Hardness, Rockwell C30.430.4 Converted from Brinell hardness.
Hardness, Vickers330330 Converted from Brinell hardness.
Modulus of Elasticity200 GPa29000 ksi Typical for stainless steel
Charpy Impact37 J27.3 ft-lb at 24°C; 15 J at -195°C, 26 J at -76°C
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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