This steel is a chromium nickel molybdenum alloy similar to 4340, but modified by the addition of vanadium and a higher silicon content. The silicon acts to displace the 500°F temper embrittlement range to higher temperatures. The overall alloy content acts to produce higher strength levels without the necessity of increasing the carbon content. Thus, this alloy offers a combination of toughness and ductility at high strength levels. It is a deep hardening steel with excellent torque properties. It has high fatigue and creep characteristics and maintains its strength at moderately high temperatures.
The grade is available as a consumable electrode vacuum remelted product. This insures a steel of the highest quality with excellent transverse ductility and toughness at high strength levels. It also insures the non-metallic cleanliness of this alloy meeting AMS 2300, thus making it most suitable for the fabrication of parts subjected to magnetic particle inspection.
MIL-S-8844 - AMS 6417 - AMS 2300
Color Marking: Ends painted Brown with Yellow Stripe
Physical Conditions E
Surface Condition 1
Stock Lengths 12' Approx.
Analysis
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N/A
Carbon .40/.43 |
Applications
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N/A Intended for ultra high strength structural applications with sections 3" or less in thickness at the time of heat treatment in order to insure through-hardening characteristics. |
Mechanical Properties
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N/A
Response to heat treatment and transverse ductility of this alloy are assured by means of tension tests performed on samples taken from mid-radius and center location of the top and bottom of billets or bars. After heat treatment, the following properties are attained:
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