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Laser Cut 4130 Chromoly Steel

4130 Chromoly steel is a low carbon alloy steel (Chromium and Molybdenum) that excels in structural applications and welding, along with many other high-stress, high-performance projects.

Starting from $29

chromoly-header
High Hardness
CORROSION RESISTANT
STRONG
chromoly-gear

Laser cut 4130 Chromoly steel, a durable metal for long-lasting projects

If what you’re making needs to withstand extreme pressures and temperatures over time, Chromoly might be the metal for you. The reason for this is in one of its key properties: Creep Strength.

This means that when you use this material in high-stress applications, you can be sure that it will stay in place and hold its shape for longer. Hence why it’s often used in bicycle frames, roll cages, and airplane structures all over the world.

If you’re looking at something a little smaller, like a gear or cog. 4130 Chromoly steel’s excellent heat treatability and machinability make it an ideal fit for strong, tiny parts.

Material Details

Details
Advertised Thickness .050″ | 1.27mm
Gauge N/A
Thickness Tolerance Positive .003
Thickness Tolerance Negative .003
Cutting Process Fiber Laser
Cut Tolerance .005
Available Operations
Deburring No
Bending Yes
Tapping Yes
Powder Coating Yes
Hardware No
Design Considerations
Max Part Size 35″ x 56″
Min Hole Size .020″
Min Bridge Size .025″
Min Bend Part Size .375″ x 1.5″
Max Bend Part Size 30″ x 30″
Min Flange Length .302″
Die Width .472″
Effective Bend Radius @ 90° .050″
Max Bend Angle 130°
Bend Deduction @ 90° .0945″
K Factor .38
Bend Relief Depth .120
Largest Tap M3 x 0.5
Smallest Tap M2 X 0.4
Min Tapping Part Size 1″ x 1.5″
Max Tapping Part Size 36″ x 46″
Min Powder Coating Part Size 1″ x 3″
Max Powder Coating Part Size 23″ x 23″
Properties
Material Composition Chromium (Cr): 0.8 – 1.1 Manganese (Mn): 0.4 – 0.6 Carbon (C): 0.28 – 0.33 Silicon (Si): 0.15 – 0.35 Molybdenum (Mo): 0.15 – 0.25 Sulfur (S): 0 – 0.040 Phosphorus (P): 0 – 0.035
Density 490 lb/ft^3
Tensile Strength (Ultimate) 77-150 ksi
Tensile Strength (Yield) 63-140 ksi
Shear Strength 49-93 ksi
Shear Modulus 11000 ksi
Fatigue Strength 47-96 ksi
Brinell Hardness 200-300
Elongation at Break 13-26%
Elastic Modulus 27000 ksi
Poisson’s Ratio .29
Thermal Conductivity 25 BTU/h-ft-°F
Melting Point 2590 °F
Magnetic Yes
Does it Rust? It can, but Chromoly is corrosion resistant and tends to rust only at the surface level. With appropriate preparation and maintenance, Chromoly will avoid rusting indefinitely.
Details
Advertised Thickness .063″ | 1.6mm
Gauge N/A
Thickness Tolerance Positive .006
Thickness Tolerance Negative .006
Cutting Process Fiber Laser
Cut Tolerance .005
Available Operations
Deburring No
Bending Yes
Tapping Yes
Powder Coating Yes
Hardware No
Design Considerations
Max Part Size 35″ x 56″
Min Hole Size .030″
Min Bridge Size .032″
Min Bend Part Size .375″ x 1.5″
Max Bend Part Size 30″ x 30″
Min Flange Length .308″
Die Width .472″
Effective Bend Radius @ 90° .050″
Max Bend Angle 130°
Bend Deduction @ 90° .1065″
K Factor .41
Bend Relief Depth .133
Largest Tap M1 x 1.0
Smallest Tap M2 X 0.4
Min Tapping Part Size 1″ x 1.5″
Max Tapping Part Size 36″ x 46″
Min Powder Coating Part Size 1″ x 3″
Max Powder Coating Part Size 23″ x 23″
Properties
Material Composition Chromium (Cr): 0.8 – 1.1 Manganese (Mn): 0.4 – 0.6 Carbon (C): 0.28 – 0.33 Silicon (Si): 0.15 – 0.35 Molybdenum (Mo): 0.15 – 0.25 Sulfur (S): 0 – 0.040 Phosphorus (P): 0 – 0.035
Density 490 lb/ft^3
Tensile Strength (Ultimate) 77-150 ksi
Tensile Strength (Yield) 63-140 ksi
Shear Strength 49-93 ksi
Shear Modulus 11000 ksi
Fatigue Strength 47-96 ksi
Brinell Hardness 200-300
Elongation at Break 13-26%
Elastic Modulus 27000 ksi
Poisson’s Ratio .29
Thermal Conductivity 25 BTU/h-ft-°F
Melting Point 2590 °F
Magnetic Yes
Does it Rust? It can, but Chromoly is corrosion resistant and tends to rust only at the surface level. With appropriate preparation and maintenance, Chromoly will avoid rusting indefinitely.
Details
Advertised Thickness .125″ | 3.18mm
Gauge N/A
Thickness Tolerance Positive .009
Thickness Tolerance Negative .009
Cutting Process Fiber Laser
Cut Tolerance .005
Available Operations
Deburring No
Bending Yes
Tapping Yes
Powder Coating No
Hardware No
Design Considerations
Max Part Size 35″ x 56″
Min Hole Size .050″
Min Bridge Size .063″
Min Bend Part Size .375″ x 1.5″
Max Bend Part Size 18″ x 18″
Min Flange Length .471″
Die Width .630″
Effective Bend Radius @ 90° .090″
Max Bend Angle 120°
Bend Deduction @ 90° .2050″
K Factor .43
Bend Relief Depth .235
Largest Tap M10 x 1.5
Smallest Tap M2 X 0.4
Min Tapping Part Size 1″ x 1.5″
Max Tapping Part Size 36″ x 46″
Min Powder Coating Part Size 1″ x 3″
Max Powder Coating Part Size 23″ x 23″
Properties
Material Composition Chromium (Cr): 0.8 – 1.1 Manganese (Mn): 0.4 – 0.6 Carbon (C): 0.28 – 0.33 Silicon (Si): 0.15 – 0.35 Molybdenum (Mo): 0.15 – 0.25 Sulfur (S): 0 – 0.040 Phosphorus (P): 0 – 0.035
Density 490 lb/ft^3
Tensile Strength (Ultimate) 77-150 ksi
Tensile Strength (Yield) 63-140 ksi
Shear Strength 49-93 ksi
Shear Modulus 11000 ksi
Fatigue Strength 47-96 ksi
Brinell Hardness 200-300
Elongation at Break 13-26%
Elastic Modulus 27000 ksi
Poisson’s Ratio .29
Thermal Conductivity 25 BTU/h-ft-°F
Melting Point 2590 °F
Magnetic Yes
Does it Rust? It can, but Chromoly is corrosion resistant and tends to rust only at the surface level. With appropriate preparation and maintenance, Chromoly will avoid rusting indefinitely.
Details
Advertised Thickness .190″ | 4.83mm
Gauge N/A
Thickness Tolerance Positive .009
Thickness Tolerance Negative .009
Cutting Process Fiber Laser
Cut Tolerance .005
Available Operations
Deburring No
Bending Yes
Tapping Yes
Powder Coating No
Hardware No
Design Considerations
Max Part Size 35″ x 56″
Min Hole Size .070″
Min Bridge Size .070″
Min Bend Part Size .375″ x 1.5″
Max Bend Part Size 18″ x 18″
Min Flange Length .782″
Die Width .984″
Effective Bend Radius @ 90° .125″
Max Bend Angle 90°
Bend Deduction @ 90° .3240″
K Factor .37
Bend Relief Depth .335
Largest Tap 1/2 – 20
Smallest Tap M3 X 0.5
Min Tapping Part Size 1″ x 1.5″
Max Tapping Part Size 36″ x 46″
Min Powder Coating Part Size 1″ x 3″
Max Powder Coating Part Size 23″ x 23″
Properties
Material Composition Chromium (Cr): 0.8 – 1.1 Manganese (Mn): 0.4 – 0.6 Carbon (C): 0.28 – 0.33 Silicon (Si): 0.15 – 0.35 Molybdenum (Mo): 0.15 – 0.25 Sulfur (S): 0 – 0.040 Phosphorus (P): 0 – 0.035
Density 490 lb/ft^3
Tensile Strength (Ultimate) 77-150 ksi
Tensile Strength (Yield) 63-140 ksi
Shear Strength 49-93 ksi
Shear Modulus 11000 ksi
Fatigue Strength 47-96 ksi
Brinell Hardness 200-300
Elongation at Break 13-26%
Elastic Modulus 27000 ksi
Poisson’s Ratio .29
Thermal Conductivity 25 BTU/h-ft-°F
Melting Point 2590 °F
Magnetic Yes
Does it Rust? It can, but Chromoly is corrosion resistant and tends to rust only at the surface level. With appropriate preparation and maintenance, Chromoly will avoid rusting indefinitely.
Details
Advertised Thickness .250″ | 6.35mm
Gauge N/A
Thickness Tolerance Positive .030
Thickness Tolerance Negative .010
Cutting Process Fiber Laser
Cut Tolerance .005
Available Operations
Deburring No
Bending Yes
Tapping Yes
Powder Coating No
Hardware No
Design Considerations
Max Part Size 35″ x 56″
Min Hole Size .100″
Min Bridge Size .125″
Min Bend Part Size .375″ x 1.5″
Max Bend Part Size 16″ x 16″
Min Flange Length 1.367″
Die Width 1.575″
Effective Bend Radius @ 90° .170″
Max Bend Angle 90°
Bend Deduction @ 90° .4335″
K Factor .36
Bend Relief Depth .440
Largest Tap 1/2 – 20
Smallest Tap M3 X 0.5
Min Tapping Part Size 1″ x 1.5″
Max Tapping Part Size 36″ x 46″
Min Powder Coating Part Size 1″ x 3″
Max Powder Coating Part Size 23″ x 23″
Properties
Material Composition Chromium (Cr): 0.8 – 1.1 Manganese (Mn): 0.4 – 0.6 Carbon (C): 0.28 – 0.33 Silicon (Si): 0.15 – 0.35 Molybdenum (Mo): 0.15 – 0.25 Sulfur (S): 0 – 0.040 Phosphorus (P): 0 – 0.035
Density 490 lb/ft^3
Tensile Strength (Ultimate) 77-150 ksi
Tensile Strength (Yield) 63-140 ksi
Shear Strength 49-93 ksi
Shear Modulus 11000 ksi
Fatigue Strength 47-96 ksi
Brinell Hardness 200-300
Elongation at Break 13-26%
Elastic Modulus 27000 ksi
Poisson’s Ratio .29
Thermal Conductivity 25 BTU/h-ft-°F
Melting Point 2590 °F
Magnetic Yes
Does it Rust? It can, but Chromoly is corrosion resistant and tends to rust only at the surface level. With appropriate preparation and maintenance, Chromoly will avoid rusting indefinitely.

Common Uses

  • Engine mounts
  • Aerospace structural
  • Gears
  • Automotive
  • Resistance welding projects
  • Bicycle parts

Our laser cut chromoly is guaranteed

We guarantee awesome quality parts. If you’re not 100% happy, we’ll give you a refund or remake on the spot – no questions, no hassle.

Material Charts and Guidelines

Min/Max Part Sizes

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Processing Min/Max Part Sizes

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Density Guidelines

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Design Guidelines

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