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4130 NORM

4130 normalized is an aircraft quality chromium-molybdenum alloy steel primarily melted in an electric air furnace. This alloy has a maximum carbon content of 0.33 and is considered a low carbon steel. It is an exceptional welding steel and readily machined in its normalized/tempered condition. 4130 normalized steel is easily cold worked, hot worked, and forged, but cannot be aged. It has excellent ductility when annealed and is a through-hardening alloy capable of developing hardness as high as 35 HRC 4130, also known as Chromoly Steel, is often used in the construction of commercial aircrafts, military aircrafts, ground support systems, race cars, off road vehicles, hydraulic tools, and machine tool applications. (UNS G41300)

Common Applications

  • AerospaceAerospace
  • IndustrialIndustrial

Benefits

  • Great Ductility
  • Capable Of High Toughness
  • Good Weldability
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4130 NORM

We Stock 4130 NORM to the Following Specifications:

  • AMS-2301
  • AMS-2304
  • AMS-6348
  • AMS-6370
  • AMS-S-6758
  • ASTM-A-322 HR
  • ASTM-A-331 CF
  • MIL-S-6758
  • ASTM A108-CF

Chemical Makeup

ElementMinMax
Carbon, C0.280.33
Manganese, Mn0.40.6
Silicon, Si0.150.35
Phosphorus, P-0.025
Sulfur, S-0.025
Chromium, Cr0.81.1
Molybdenum, Mo0.150.25
Nickel, Ni-0.25
Copper, Cu-0.35
Aluminum, Al0.020.05
Vanadium, V0.020.08
Columbium/Niobium, Nb0.020.05

Cross-Fittings

Round

There are 99 sizes and conditions.

  • 1/8 - CD
  • 3/16 - CD
  • 7/32 - CD
  • 1/4 - CD
  • 9/32 - CD
  • 5/16 - CD
  • 21/64 - CD
  • 11/32 - CD
  • 3/8 - CD
  • 25/64 - CD
  • 13/32 - CD
  • 7/16 - CD
  • 15/32 - CD
  • 1/2 - CD
  • 17/32 - CD
  • 9/16 - CD
  • 5/8 - CD
  • 11/16 - CD
  • 3/4 - CD
  • 13/16 - CD
  • 7/8 - CD
  • 15/16 - CD
  • 1 - CD
  • 1-1/16 - CD
  • 1-1/8 - CD
  • 1-3/16 - CD
  • 1-1/4 - T-CD TL
  • 1-5/16 - T-CD TL
  • 1-3/8 - T-CD TL
  • 1-7/16 - T-CD TL
  • 1-1/2 - T-CD TL
  • 1-9/16 - T-CD TL
  • 1-5/8 - T-CD TL
  • 1-3/4 - T-CD TL
  • 1-7/8 - T-CD TL
  • 2 - T-CD TL
  • 2-1/8 - T-CD TL
  • 2-3/16 - T-CD TL
  • 2-1/4 - T-CD TL
  • 2-3/8 - T-CD TL
  • 2-1/2 - T-CD TL
  • 2-5/8 - T-CD TL
  • 2-3/4 - T-CD TL
  • 2-7/8 - T-CD TL
  • 3 - T-CD TL
  • 3-1/8 - T-CD TL
  • 3-1/4 - T-CD TL
  • 3-3/8 - T-CD TL
  • 3-1/2 - T-CD TL
  • 3-3/4 - T-CD TL
  • 4 - T-CD TL
  • 4-1/4 - T-CD TL
  • 4-1/2 - T-CD TL
  • 1 - T-HR TL
  • 1-1/4 - T-HR TL
  • 1-1/2 - T-HR TL
  • 1-5/8 - T-HR TL
  • 1-3/4 - T-HR TL
  • 1-7/8 - T-HR TL
  • 2 - T-HR TL
  • 2-1/8 - T-HR TL
  • 2-1/4 - T-HR TL
  • 2-3/8 - T-HR TL
  • 2-1/2 - T-HR TL
  • 2-5/8 - T-HR TL
  • 2-3/4 - T-HR TL
  • 2-7/8 - T-HR TL
  • 3 - T-HR TL
  • 3-1/4 - T-HR TL
  • 3-3/8 - T-HR TL
  • 3-1/2 - T-HR TL
  • 3-5/8 - T-HR TL
  • 3-3/4 - T-HR TL
  • 4 - T-HR TL
  • 4-1/4 - T-HR TL
  • 4-1/2 - T-HR TL
  • 4-3/4 - T-HR TL
  • 5 - T-HR TL
  • 5-1/4 - T-HR TL
  • 5-1/2 - T-HR TL
  • 5-3/4 - T-HR TL
  • 6 - T-HR TL
  • 6-1/4 - T-HR TL
  • 6-1/2 - T-HR TL
  • 6-3/4 - T-HR TL
  • 7 - T-HR TL
  • 7-1/2 - T-HR TL
  • 8 - T-HR TL
  • 8-1/2 - T-HR TL
  • 9 - T-HR TL
  • 9-1/2 - T-HR TL
  • 10 - T-HR TL
  • 11 - T-HR TL
  • 12 - T-HR TL
  • 13 - T-HR TL
  • 14 - T-HR TL
  • 16 - T-HR TL
  • 18 - T-HR TL
  • 20 - T-HR TL

Flat

There are 103 sizes and conditions.

  • 3/16 X 1 - CD
  • 3/16 X 1-1/2 - CD
  • 3/16 X 2 - CD
  • 1/4 X 1 - CD
  • 1/4 X 1-1/4 - CD
  • 1/4 X 1-1/2 - CD
  • 1/4 X 1-3/4 - CD
  • 1/4 X 2 - CD
  • 1/4 X 2-1/2 - CD
  • 1/4 X 3 - CD
  • 1/4 X 4 - CD
  • 1/4 X 5 - CD
  • 5/16 X 1 - CD
  • 5/16 X 1-1/2 - CD
  • 5/16 X 2 - CD
  • 3/8 X 3/4 - CD
  • 3/8 X 1 - CD
  • 3/8 X 1-1/4 - CD
  • 3/8 X 1-1/2 - CD
  • 3/8 X 1-3/4 - CD
  • 3/8 X 2 - CD
  • 3/8 X 2-1/2 - CD
  • 3/8 X 3 - CD
  • 3/8 X 4 - CD
  • 3/8 X 5 - CD
  • 3/8 X 6 - CD
  • 1/2 X 3/4 - CD
  • 1/2 X 1 - CD
  • 1/2 X 1-1/4 - CD
  • 1/2 X 1-1/2 - CD
  • 1/2 X 1-3/4 - CD
  • 1/2 X 2 - CD
  • 1/2 X 2-1/2 - CD
  • 1/2 X 3 - CD
  • 1/2 X 4 - CD
  • 1/2 X 5 - CD
  • 1/2 X 6 - CD
  • 5/8 X 1 - CD
  • 5/8 X 1-1/4 - CD
  • 5/8 X 1-1/2 - CD
  • 5/8 X 2 - CD
  • 5/8 X 2-1/2 - CD
  • 5/8 X 3 - CD
  • 5/8 X 4 - CD
  • 5/8 X 6 - CD
  • 3/4 X 1 - CD
  • 3/4 X 1-1/4 - CD
  • 3/4 X 1-1/2 - CD
  • 3/4 X 1-3/4 - CD
  • 3/4 X 2 - CD
  • 3/4 X 2-1/2 - CD
  • 3/4 X 3 - CD
  • 3/4 X 4 - CD
  • 3/4 X 5 - CD
  • 3/4 X 6 - CD
  • 1 X 1-1/4 - CD
  • 1 X 1-1/2 - CD
  • 1 X 1-3/4 - CD
  • 1 X 2 - CD
  • 1 X 2-1/2 - CD
  • 1 X 3 - CD
  • 1 X 4 - CD
  • 1 X 5 - CD
  • 1 X 6 - CD
  • 1-1/4 X 1-1/2 - CD
  • 1-1/4 X 2 - CD
  • 1-1/4 X 2-1/2 - CD
  • 1-1/4 X 3 - CD
  • 1-1/4 X 4 - CD
  • 1-1/4 X 6 - CD
  • 1-1/2 X 1-3/4 - CD
  • 1-1/2 X 2 - CD
  • 1-1/2 X 2-1/2 - CD
  • 1-1/2 X 3 - CD
  • 1-1/2 X 4 - CD
  • 1-1/2 X 5 - CD
  • 1-1/2 X 6 - CD
  • 1-3/4 X 3 - CD
  • 2 X 2-1/2 - CD
  • 2 X 3 - CD
  • 2 X 4 - CD
  • 2 X 5 - CD
  • 2 X 6 - CD
  • 2-1/2 X 4 - CD
  • 2-1/2 X 5 - CD
  • 2-1/2 X 6 - CD
  • 3 X 4 - CD
  • 3 X 5 - CD
  • 3 X 6 - CD
  • 1-3/4 X 3 - HR
  • 1-3/4 X 4 - HR
  • 2 X 2-1/2 - HR
  • 2 X 3 - HR
  • 2 X 4 - HR
  • 2 X 5 - HR
  • 2 X 6 - HR
  • 2-1/2 X 3 - HR
  • 2-1/2 X 4 - HR
  • 2-1/2 X 6 - HR
  • 3 X 4 - HR
  • 3 X 5 - HR
  • 3 X 6 - HR
  • 4 X 6 - HR

Square

There are 16 sizes and conditions.

  • 1/2 - CD
  • 5/8 - CD
  • 3/4 - CD
  • 7/8 - CD
  • 1 - CD
  • 1-1/8 - CD
  • 1-1/4 - CD
  • 1-1/2 - CD
  • 2 - HR-RCS
  • 2-1/4 - HR-RCS
  • 2-1/2 - HR-RCS
  • 3 - HR-RCS
  • 3-1/2 - HR-RCS
  • 4 - HR-RCS
  • 5 - HR-RCS
  • 6 - HR-RCS

Hex

There are 17 sizes and conditions.

  • 1/4 - CD
  • 5/16 - CD
  • 3/8 - CD
  • 1/2 - CD
  • 9/16 - CD
  • 5/8 - CD
  • 11/16 - CD
  • 3/4 - CD
  • 7/8 - CD
  • 1 - CD
  • 1-1/8 - CD
  • 1-1/4 - CD
  • 1-3/8 - CD
  • 1-1/2 - CD
  • 1-5/8 - CD
  • 1-3/4 - CD
  • 2 - CD
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