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. % C 0.28 - 0.35   Cr 18 - 21   Cu Max 0.5   Fe 64   Mn 0.75 - 1.5

Component    Wt. % Mo 1 - 1.75   Nb 0.25 - 0.6   Ni 8 - 11   P Max 0.04

Component    Wt. % S Max 0.03   Si 0.3 - 0.8   Ti 0.1 - 0.35   W 1 - 1.75

Material Notes:
Charpy V-Notch Impact properties and hardness

Physical Properties	Metric	English	Comments
Density	7.94 g/cc	0.287 lb/in³
Mechanical Properties
Hardness, Brinell	311	311
Hardness, Knoop	347	347	Converted from Brinell hardness.
Hardness, Rockwell C	30.4	30.4	Converted from Brinell hardness.
Hardness, Vickers	330	330	Converted from Brinell hardness.
Modulus of Elasticity	200 GPa	29000 ksi	Typical for stainless steel
Charpy Impact	37 J	27.3 ft-lb	at 24°C; 15 J at -195°C, 26 J at -76°C
Machinability	45 %	45 %	Based on 100% machinability for AISI 1212 steel.
Thermal Properties
CTE, linear 20°C	15.3 µm/m-°C	8.5 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°C	16.7 µm/m-°C	9.28 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°C	17.6 µm/m-°C	9.78 µin/in-°F	at 21-540°C (70-1000°F), 18.0 µm/m°C at 21-815°C (70-1500°F)
Specific Heat Capacity	0.42 J/g-°C	0.1 BTU/lb-°F	from 0-100°C (32-212°F)
Thermal Conductivity	13.5 W/m-K	93.7 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 Point	1420 - 1435 °C	2590 - 2620 °F
Solidus	1420 °C	2590 °F
Liquidus	1435 °C	2620 °F
Maximum Service Temperature, Air	780 °C	1440 °F	Continuous Service
Maximum Service Temperature, Air	955 °C	1750 °F	Intermittent Service

References for this datasheet.