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

High Hardness

CORROSION RESISTANT

STRONG

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

.050" | 1.27mm

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
Countersinking	No
Tapping	Yes
Powder Coating	Yes
Hardware	No
Design Considerations
Min Part Size	.25″ x .375″
Max Part Size	44″ x 30″
Min Hole Size	.020″
Min Bridge Size	.025″
Tab and Slot Tolerance	.010″
Min Bend Part Size	.375″ x 1.5″
Max Bend Part Size	30″ x 30″
Min Flange Length (After Bend)	.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.

.063" | 1.6mm

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
Countersinking	No
Tapping	Yes
Powder Coating	Yes
Hardware	No
Design Considerations
Min Part Size	.25″ x .375″
Max Part Size	44″ x 30″
Min Hole Size	.030″
Min Bridge Size	.032″
Tab and Slot Tolerance	.010″
Min Bend Part Size	.375″ x 1.5″
Max Bend Part Size	30″ x 30″
Min Flange Length (After Bend)	.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.

.125" | 3.18mm

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
Countersinking	No
Tapping	Yes
Powder Coating	No
Hardware	No
Design Considerations
Min Part Size	.25″ x .375″
Max Part Size	44″ x 30″
Min Hole Size	.050″
Min Bridge Size	.063″
Tab and Slot Tolerance	.015″
Min Bend Part Size	.375″ x 1.5″
Max Bend Part Size	18″ x 18″
Min Flange Length (After Bend)	.723″
Die Width	.984″
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.

.190" | 4.83mm

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
Countersinking	No
Tapping	Yes
Powder Coating	No
Hardware	No
Design Considerations
Min Part Size	.5″ x .75″
Max Part Size	44″ x 30″
Min Hole Size	.070″
Min Bridge Size	.070″
Tab and Slot Tolerance	.015″
Min Bend Part Size	.375″ x 1.5″
Min Flange Length (After Bend)	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.

.250" | 6.35mm

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
Countersinking	No
Tapping	Yes
Powder Coating	No
Hardware	No
Design Considerations
Min Part Size	.5″ x .75″
Max Part Size	44″ x 30″
Min Hole Size	.100″
Min Bridge Size	.125″
Tab and Slot Tolerance	.035″
Min Bend Part Size	.375″ x 1.5″
Max Bend Part Size	16″ x 16″
Min Flange Length (After Bend)	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.