4140 Low-Alloy Steel (DM Production System)

DESKTOP METAL®

4140 Low-Alloy Steel

The steel alloy for industrial applications

The 4140 low alloy is all-purpose steel for industrial applications. It is characterized by its toughness, high fatigue strength, abrasion and impact resistance. 4140 low-alloy steel meets the MPIF 35 standards for structural powder metallurgy parts set by the Metal Powder Industries Federation.

4140. All-purpose &
Heat-treatable Steel

4140 is one of the most versatile low-alloy steels. It is characterized by its toughness, high tensile strength, abrasion and impact resistance. It is a critical all-purpose and heat-treatable steel used extensively in the automotive and oil and gas industries.

3D-printed-4140-power-steering-joints

Applications

Proto3000_Icon_Jigs Fixtures

Jigs & Fixtures

Proto3000 auto industry icon

Autototive

Proto3000_Icon_Valves Fasteners

Bolts & Nuts

Proto3000_Repeatability Homogeneity icon

Gears

Steel Couplings

Power_Steering_Joint_Production System

Power Steering Joint (DM Production System)

Material: 4140 Low-Alloy Steel

The power steering joint is used for power transfer between an electric power steering motor and the steering shaft in an automobile. 4140 low-alloy steel’s properties such as strength and hardness, are essential for the spline teeth that connect that part to the rest of its assembly.

Full Description

While the production process that uses a conventional press and sinter process would require an expensive mold, the Production System P-50 enables production with no tooling thus reducing lead times and enabling more flexible design for quantities up to 1.2 million per year at a fully burdened part cost as low as $2.45.

Technology/Process
  • Single Pass Jetting™ (SPJ) Technology

Linear_Pneumatic_Piston

Linear Pneumatic Piston (DM Production System)

Material: 4140 Low-Alloy Steel

The linear pneumatic piston is used to convert air pressure into rotary motion through a rack and pinion. 3D printed on the Production System with 4140 low-alloy steel, it provides the toughness and wear-resistance required for this application.

Full Description

These parts are traditionally assembled from multiple components due to the geometry and cost limitations of conventional manufacturing processes. The Production System P-50 enables the production of up to 690,000 parts per year at a cost as low as $0.28 per cubic centimetre of sintered 4140 low-alloy steel.

Technology/Process
  • Single Pass Jetting™ (SPJ) Technology

HERRINGBONE GEARS - DESKTOP METAL

Herringbone Gear (DM Production System)

Herringbone gears are found in a wide range of industrial machinery applications. 3D printed with 4140 low-alloy steel, these gears benefit from the excellent hardness of this steel and can be lightweight using complex lattice designs.

Full Description

The lattice designs are possible by additive manufacturing. You can reduce material cost and wear on external components, such as motors and bearings. This type of gear can be mass-produced on the Production System P-50 in quantities up to 200,000 per year with 120 parts nested in each build.

Technology/Process
  • Single Pass Jetting™ (SPJ) Technology

Lever_Drive 4140 alloy steel

Lever Drive (DM Production System)

Material: 4140 Low-Alloy Steel

The lever drive is often used in machine design to linearly adjust the location of components in a machine. Binder jetting easily facilitates features such as the precise grooves critical for locating the correct position of external components.

Full Description

While producing a mid-volume run of 10,000 parts would not be cost-effective with conventional manufacturing given the upfront tooling costs or the labour costs associated with machining, the Production System P-50 can print the required quantities in a day with sintered parts ready in less than a week.

Technology/Process
  • Single Pass Jetting™ (SPJ) Technology

 Make Metal Work Faster

No more waiting for machined or cast parts. Iterate faster by printing highly complex metal parts without leaving the office.

REQUEST INFO

Material Properties

ULTIMATE TENSILE STRENGTH*
ASTM E8 – as sintered
Proto3000_Icons_Tensile Strength

510±7 MPa

*Values across XY & YX orientation

YIELD STRENGTH*
ASTM E8 – as sintered
Proto3000_Icons_Tensile Modulus

155±5 MPa

*Values across XY & YX orientation

ELONGATION AT BREAK
ASTME8 – as sinteredProto3000_Icons_Elongation at Break

75.3 ± 4.0%

DENSITY
As-sintered
Proto3000_Icon_Density

7.9 g/cm³

Performance Scale

Strength
MPIF 35 Standards
Corrosion Resistance at Extreme Temperatures
Medical Grade Steel

Discover a cleaner and more efficient way to smooth and polish metal parts

 

Request a Sample

Technical Specifications

 
Production System™ (as sintered)
ASTM B883 / MPIF 35 (as sintered)
Ultimate Tensile Strength, ASTM E8M
1,880 ± 29 MPa 1,380 – 1,650 MPa
Ultimate Tensile Strength, ASTM E8M
1,880 ± 29 MPa
1,380 – 1,650 MPa
Yield Strength, ASTM E8M
1,455 ± 34 MPa 1,070 – 1,240 MPa
Yield Strength, ASTM E8M
1,455 ± 34 MPa
1,070 – 1,240 MPa
Elongation at Break, ASTM E8M
4.8 ± 1.1% 3 - 5%
Elongation at Break, ASTM E8M
4.8 ± 1.1%
3 - 5%
Hardness (HRC), ASTM E18
47.1 ± 0.7 46
Hardness (HRC), ASTM E18
47.1 ± 0.7
46
Density
7.5 g/cm³ 7.5 g/cm³
Density
7.5 g/cm³
Surface Roughness*
3 - 8 μm Ra

*Surface roughness measured in Z direction after
sintering & sandblasting
N/A
Surface Roughness*
3 - 8 μm Ra

*Surface roughness measured in Z direction after
sintering & sandblasting
N/A
Young's Modulus, ASTM E1111
203 ± 9 GPa 205 GPa
Young's Modulus, ASTM E1111
203 ± 9 GPa
205 GPa

Related Resources