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All Categories > Alloyed Bars and Plates > Aircraft Alloy Steels > Cold Finished Aircraft Alloy Bars > 300M VAR Premium Aircraft Alloy > 300M VAR Premium Aircraft Centerless Ground Normalized and Tempered Alloy - Rounds  
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300M VAR Premium Aircraft Centerless Ground Normalized and Tempered Alloy - Rounds

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(E4340 Modified)
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 4

Stock Lengths: 12' Approx.

Item #

Estimated Weight per Foot

Estimated Weight 12-Ft. Bar

1/2 .6682 lb 8.019 lb
3/4 1.504 lb 18.04 lb
1 2.673 lb 32.07 lb
1 1/8 3.383 lb 40.59 lb
1 1/4 4.176 lb 50.12 lb
1 3/8 5.053 lb 60.64 lb
1 1/2 6.014 lb 72.17 lb
1 5/8 7.058 lb 84.70 lb
1 3/4 8.186 lb 98.23 lb


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