420 Stainless Steel (DM Production System)
DESKTOP METAL®
420 Stainless Steel
The martensitic alloy with great mechanical properties & wear-resistance
420 stainless steel is a martensitic stainless steel, characterized by its high strength and hardness as well as its corrosion resistance to the atmosphere, foods, freshwater, and mild acids when in a fully hardened condition. 420 SS is a common material widely used across many applications.
420 Stainless Steel. Increase build speeds
The grade 420 stainless steel (420 SS) used on the Production System™ leverages the Single Pass Jetting (SPJ) technology. This technology is designed to achieve the fastest build speeds for the mass production of high-strength and end-use parts. The 420 SS can be used for demanding applications within the medical, aerospace, defence, and consumer products industries.
Aerospace
- Ball Bearings
- Gear Shafts
- Pump and Valve Components
- Fasteners
- Gauges
Defence
- Ball Bearings
- Gear Shafts
- Pump and Valve Components
- Fasteners
- Gauges
Medical
- Surgical & Dental Instruments
Consumer Product
- Hand Tools
Food Industry
- High-end Cutlery
Locking Articulation Bar (DM Production System)
Material: 420 Stainless Steel
Robotic surgical systems are used in a variety of medical procedures to provide surgeons with a better range of motion, enhanced visibility, and a level of precision unachievable with manual surgeries. These systems feature highly precise motion systems with many small intricate parts. For components like locking articulation bars, 420 SS is the desired material due to its high hardness and excellent corrosion resistance.
Full Description
The Production System offers high-resolution binder jet printing, an ideal solution for achieving the fine features of robotic surgical instruments. Since no tooling is required to fabricate these parts with binder jetting on the Production System, the volume production can begin as soon as the design is complete. This way, you can save valuable time and money on large non-recurring costs of tooling design and fabrication.
Technology/Process
- Single Pass Jetting™ (SPJ) Technology
Valve Nozzle Adapter (DM Production System)
Material: 420 Stainless Steel
Valve nozzle adapters connect nozzles with fluid systems in aerospace applications, where multiple versions of these adapters are often required to accommodate various nozzle geometries and sizes. With capacity for thousands of adapters in a single build, the Production System™ can support the manufacturing of these components in 420 SS in volumes competitive with conventional manufacturing methods.
Full Description
Moreover, because there’s no need for tooling, numerous adapter geometries can be printed within a single build. This way, you can save lead times and costs associated with changing over tooling in conventional manufacturing processes.
Technology/Process
- Single Pass Jetting™ (SPJ) Technology
Twin Screw Extruder Mixing Elements (Production System)
Material: 420 Stainless Steel
Twin-screw extruder mixing elements are used for mixing, compounding and processing viscous materials. These parts feature complex lobes around the exterior of the spline that must be optimized for the material being extruded. A unique mixing element is needed for each different material.
Full Description
With conventional manufacturing, each of these elements can be complex to produce, often requiring advanced machining techniques, multiple machining setups, and custom fixturing. Binder jetting with the Production System™ simplifies the manufacturing process, enabling large volumes of several, unique mixing elements to be printed in each build, reducing the cost and lead time of production compared to machining. 420 SS is an essential material in these applications for its high hardness and corrosion resistance, ensuring the elements have a long lifetime and the hardness required for extruding a wide variety of materials.
Technology/Process
- Single Pass Jetting™ (SPJ) Technology
Material Properties
ULTIMATE TENSILE STRENGTH*
ASTM E8M – Tempered
1500±50 MPa
*YS & UTS properties noted represent mean values across XY & YX orientations.
YIELD STRENGTH*
ASTM E8M – Tempered
1,130±50 MPa
*YS & UTS properties noted represent mean values across XY & YX orientations.
ELONGATION AT BREAK
ASTM E8M – Tempered
5.9 ± 3.4%
DENSITY
Tempered
7.6 g/cm³
Performance Scale
| Strength | |
| Corrosion Resistance | |
| Resistance to Atmosphere, Foods & Mild Acids |
Discover a cleaner and more efficient way to smooth and polish metal parts
Technical Specifications
Production System™ |
MPIF 35 (Heat Treated) |
|
Ultimate Tensile Strength* (Tempered), ASTM E8M |
1,500 ± 50 MPa *YS & UTS properties noted represent mean values across Xy & Yx orientations. |
1,380 MPa |
Yield Strength* (Tempered), ASTM E8M |
1,130 ± 50 MPa *YS & UTS properties noted represent mean values across Xy & Yx orientations. |
1,200 MPa |
Elongation at Break (Tempered), ASTM E8M |
5.9 ± 3.4% | <1% |
Young's Modulus** (Tempered), ASTM E8M |
210 GPa **Surface roughness measured in Z direction after sintering & sand blasting |
190 GPa |
Density (Tempered) |
7.6 g/cm3 | 7.4 g/cm3 |
Surface Roughness (Tempered), ISO 4287 |
3 - 8 µm Ra | N/A |
Hardness (HRC), Tempered, ASTM E18 |
46 ± 2 | 44 |
Hardness (HRC), Air Quenched, ASTM E18 |
50 ± 2 | N/A |