Grade 4340 Low Alloy Steel
4340 is a low alloy steel with ultra high strength melted as AOD + VAR or VIM + VAR product. It also possessed good toughness and fatigue strength when heat treated. This alloy also displays excellent transverse properties even in larger cross sections. These properties along with the cleanliness of VAR remelting make this alloy an excellent candidate for aerospace applications.
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- AMS 6409
- AMS 6414
- AMS 6415
- AMS 6484
- AMS STD 2154
- Barden SA 3880
- Bell 299-947-055
- Bell 299-947-335
- Boeing BMS 7-28
- McDonnel Douglas DMS-1555
- MIL-S-8844D
- Sikorsky Aircraft SS9702 (capability)
- NHBB PES 1.114
- SKF MS-231
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- Bell 299-947-055
- Bell 299-947-335
- Boeing BMS 7-28
- Bombardier Approval AMS 6414
- GE S35 (replaced S-400)
- GE S-Spec-1 (replaced S-1000)
- Lockheed Martin AMS 6414
- Lockheed Martin AMS 6415
- McDonnel Douglas DMS-1555
- New Hampshire Ball Bearing NHBB PES 1.114
- Pratt Whitney LCS
- Safran - Messier Dowty AMS 6414
- Schaeffler S130287
- SKF MS-231
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- UNS G43406
- AISI E4340
- Din 1.6562
- JIS 40NiCrMo7
- Aerospace
- AOD+VAR
- VIM+VAR
- Low Alloy Steels
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