AMS Resource, Inc. - Alloy, Metal & Steel Supplier

4340 / E4340 Nickel-Chromium-Molybdenum Alloy Steel

Description

4340 is a heat treatable, low alloy steel containing nickel, chromium and molybdenum. It is known for its toughness and capability of developing high strength in the heat treated condition while retaining good fatigue strength.

Commercial Quality available along with Air Craft Quality (Vac. Melt)

4340 HT (Heat Treated)
4340 QTSR (Quenched and Tempered, Stress Relieved)
4340H
E4340
E4340 Modified - ACQ
E4340 N&T (Normalized and Tempered)
E4340 Vac. Melt (CEVM or VAR) N&T
E4340 Vac. Melt (CEVM or VAR) N&T "also see 300M"

Applications

Typical applications are for structural use, such as aircraft landing gear, power transmission gears and shafts and other structural parts.

Specifications

G43400 4340, Ni-Cr-Mo ALLOY STEEL
G43406 E4340, Ni-Cr-Mo ALLOY STEEL (AIRCRAFT QUALITY)
AMS 2300 CLEANLINESS, PREMIUM AIRCRAFT-QUALITY MAGNETIC PARTICLE INSPECTION PROCEDURE
AMS 2301 CLEANLINESS, AIRCRAFT-QUALITY MAGNETIC PARTICLE INSPECTION PROCEDURE
AMS 2304 CLEANLINESS, SPECIAL AIRCRAFT-QUALITY MAGNETIC PARTICLE INSPECTION PROCEDURE
AMS 2310 QUALIFICATION SAMPLING AND TESTING OF STEELS TRANSVERSE TENSILE PROPERTIES
AMS 6257 BARS, FORGINGS, AND TUBING, CONSUMABLE ELECTRODE VACUUM REMELT NORMALIZED & TEMPERED (0.40-0.44 C) 300M
AMS 6359F STEEL SHEET, STRIP & PLATE
AMS 6409A STEEL BARS, FORGINGS & TUBING
AMS 6414H STEEL BARS, FORGINGS & TUBING
AMS 6415P STEEL BARS, FORGINGS & TUBING
AMS 6417 STEEL, BARS, FORGINGS, AND TUBING, CONSUMABLE ELECTRODE VACUMN REMELT (0.39-0.43 C)
AMS 6419 STEEL, BARS, FORGINGS, AND TUBING, CONSUMABLE ELECTRODE VACUMN REMELT (0.40-0.45 C) 300M
AMS 6454B STEEL SHEET, STRIP & PLATE
AMS 6484A STEEL BARS, FORGINGS & TUBING
ASTM A-29 GENERAL REQUIREMENTS FOR CARBON & ALLOY BARS, WROUGHT & COLD-FINISHED
ASTM A-304 STEEL BARS, ALLOY, SUBJECT TO END-QUENCH HARDENABILITY REQUIREMENTS
ASTM A-320 (L43) ALLOY STEEL BOLTING MATERIAL FOR LOW TEMPERATURE SERVICE
ASTM A-322 STEEL BARS, ALLOY, STANDARD GRADES STEEL BARS, ALLOY, STANDARD GRADES
ASTM A-331 STEEL BARS, ALLOY, COLD-FINISHED STEEL BARS, ALLOY, COLD-FINISHED
ASTM A-506 STANDARD SPEC. FOR STEEL SHEET & STRIP, ALLOY, HR QUALITY & STRUCTURAL QUALITY
ASTM A-519 SEAMLESS CARBON & ALLOY MECHANICAL TUBING
ASTM A-646 (4340-7) PREMIUM QUALITY ALLOY STEEL BLOOMS & BILLETS FOR AIRCRAFT & AEROSPACE FORGINGS
ASTM A-711 STANDARD SPEC. FOR STEEL FORGING STOCK STANDARD SPEC. FOR STEEL FORGING STOCK
ASTM A-752 GENERAL REQUIREMENTS FOR WIRE RODS & COARSE WIRE, ALLOY STEEL
ASTM A-829 ALLOY STRUCTURAL STEEL PLATES
MIL-C-10387J COUPLINGS, CLAMP, PIPE: WITH BOLTS & SYNTHETIC-RUBBER GASKETS FOR GROOVED-END PIPE
MIL-S-24093A STEEL FORGINGS, CARBON & ALLOY HEAT TREATED
MIL-S-5000E STEEL, CHROME-NICKEL-MOLYBDENUM (4340) BARS, & FORGING STOCK
MIL-S-83135 STEEL BARS, REFORGING STOCK, AND MECHANICAL TUBING 4340M, HIGH QUALITY
MIL-S-8844-3 STEEL BARS, REFORGING STOCK & MECHANICAL TUBING, LOW ALLOY, PREMIUM QUALITY
QQ-S-626 ALLOY STEEL PLATES ( STRUCTURAL )
SAE J1397 ESTIMATED MECHANICAL PROPERTIES & MACHINABILITY OF STEEL BARS
SAE J404 CHEMICAL COMPOSITIONS OF SAE ALLOY STEELS
SAE J412 GENERAL CHARACTERISTICS & HEAT TREATMENTS OF STEELS GENERAL CHARACTERISTICS & HEAT TREATMENTS OF STEELS
BMS-7-28 (BOEING)

Available Forms

  • Bar
  • Extrusion-shapes
  • Forge
  • Hex Bar
  • Plate
  • Rectangle Bar
  • Rod
  • Rolled Rings
  • Square Bar
  • Tubes