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17-4 PH Stainless Steel

Characterized by its combination of strength, hardness, and corrosion resistance, 17-4 PH is a stainless steel ideal for a variety of applications, including tooling, molds, and production parts. 
 
3D Printing Process
  • Bound Metal Deposition (BMD)
Common Applications
  • Manufacturing machinery

  • Chemical processing

  • Food processing

  • Pump components

  • Valving

  • Fasteners

  • Jigs and Fixtures

3D printed 17-4-PGH Stainless Steel (Courtesy of Desktop Metal)

About 17-4PH Stainless Steel

17-4 PH is a hardened stainless steel which is known for its corrosion resistance and high levels of strength and toughness, especially when heat treated. 17-4 stainess can be heat treated to a variety of hardness and toughness levels, allowing users to customize post-sintering properties of the alloy to suit a wide variety of applications.

17-4PH is manufactured with an extrusion-based metal 3D printing process, called Bound Metal Deposition.  

3D printed 17-4PH Stainless Steel - excellent corrosion resistance and hardness at 250 nm magnification (courtesy of Desktop Metal)

250 µm magnification

Bound Metal Deposition 3D Printing Process

Bound Metal Deposition extrudes metal rods into complex shapes layer-by-layer. Once printed, parts are sintered in a furnace for final densification and removal of binder. This process achieves 98% density, similar to cast parts. Layer lines are typically visible and part surfaces are similar to cast part surfaces. This printing process can have closed-cell infill for lightweight strength.

Best for for all-purpose use, including:

  • prototypes and end-use parts

  • form-, fit- and function- testing

BMD Metal 3D printing Process (Courtesy of Desktop Metal).png

Grades

Balace performance and affordability with your choice of Standard or High resolution 3D printing for Bound Metal Deposition (BMD) 3D printed metals.

Standard Resolution

Ideal for all-purpose use, including:

  • prototypes and end-use parts

  • form-, fit- and function- testing

  • strength and density similar to cast metal

  • industry-standard quality requirements

High Resolution

Ideal for specialty production, including:

  • complex metal parts

  • parts designed for demanding environments

  • series production

  • higher strength and density than cast metal

Finishing Options

Bead Blasting

Parts are blasted with fine glass bead to smooth surfaces and give a matte appearance. Recommended for consumer-facing parts.

Standard

All parts are cleaned and ready for use when shipped. There may be layer lines and residual marks from support structures.

Technical Specifications

Technical Specifications
details
3D printing technology
Bound Metal Deposition
Layer Height (standard resolution)
100-220µ
Layer height (high resolution)
50µ
3D printing technology
Bound Metal Deposition
Part tolerance (under 60 mm)
± 0.5%
Part tolerance (over 60 mm)
± 0.8%
Part tolerance (over 60 mm)
± 0.8%
Layer height (high resolution)
50µ
Part density
96 - 99%
Build Envelope
289 x 189 x 195 cm
Layer Height (standard resolution)
100-220µ
Part tolerance (under 60 mm)
± 0.5%
Build Specifications
Mechanical Properties
Mech Properties
Standard
As-Sintered
MIM - MPIF 35 min 2 (As-Sintered)
Density (g/cc)
ASTM B311
7.56
7.5
Hardness (HRC)
ASTM E18
26
27 (typ)
Elongation at break (%)
ASTM E8M
5.3%
4%
Ultimate tensile strength – xy (MPa)
ASTM E8M
925
790
Yield strength – xy (MPa)
ASTM E8M
695
650
Element
Composition %
Fe
Balance
Si
1.0 (max)
NB + Ta
0.15 - 0.45
Mn
1.0 (max)
Cu
3 - 5
Ni
3 - 5
Cr
15.5 - 17.5
C
0.07 (max)
Composition %
-
-
ISO
4542-174-00-I
EN
1.4542
UNS
S17400
Standard Designations

Design Guidelines​

Maximum part size

Standard Resolution       High Resolution

 

X    240 mm 9.4 in            X    60 mm 2.4 in

Y    240 mm 9.4 in            Y    60 mm 2.4 in

Z    240 mm 9.4 in            Z    60 mm 2.4 in

To optimize for fabrication success, the recommended maximum part size is 150 x 150 x 110 mm (6.0 x 6.0 x 4.3 in).

Minimum part size
metal 3D printing design guide - Minimum part size_edited.jpg

Standard Resolution       High Resolution

 

X    6mm  0.24in                 X    3mm 0.14in

Y    6mm  0.24in                 Y    3mm 0.14in

Z    6mm  0.24in                 Z    3mm 0.14in

The minimum part size considers the minimum number of bottom layers, top layers, and toolpaths within a wall required to produce a successful part.

Minimum wall thickness
metal 3D printing design guide - Minimum wall thickness.png

Standard Resolution       High Resolution

 

1.0 mm                                 0.6 mm

The minimum wall thickness considers structural integrity during sintering. Wall thickness must be at least two toolpaths wide, or approximately 1mm. When printing a wall greater than 8mm tall, the ratio of height to width must not exceed 8:1.

Minimum pin diameter
metal 3D printing design guide - Minimum pin diameter_edited.jpg

Standard Resolution       High Resolution

 

3.0mm 0.12in                     1.5mm 0.06in

Pins should obey the aspect ratio guideline of 8:1.

Minimum embossed feature
metal 3D printing design guide - Minimum embossed feature.png

Standard Resolution          High Resolution

 

X/Y   W 0.45mm 0.018in        W 0.30mm 0.012in

         H 0.50mm 0.020in         H 0.30mm 0.012in

 

Z       W 0.25mm 0.010in         W 0.15mm 0.006in

         H 0.50mm 0.020in          H 0.30mm 0.012in 

Embossed features are proud of the surface of the model. If an embossed feature is too thin, it likely will not print.

Minimum debossed feature
metal 3D printing design guide - Minimum debossed feature.png

Standard Resolution          High Resolution

 

X/Y   W 0.45mm 0.018in        W 0.30mm 0.012in

         H 0.50mm 0.020in         H 0.30mm 0.012in

 

Z       W 0.25mm 0.010in         W 0.15mm 0.006in

         H 0.50mm 0.020in          H 0.30mm 0.012in 

Debossed features are typically used for surface detailing and text on the surface of the model. If a debossed feature is too thin, it risks over-extrusions that fill in the engraved feature.

Minimum unsupported overhang angle
metal 3D printing design guide - Minimum unsupported overhang angle.png

Standard Resolution       High Resolution

 

40 degrees                           40 degrees

Overhangs greater than 40° from planar will require supports.

Minimum clearance
metal 3D printing design guide - Minimum clearance_edited.jpg

Standard Resolution       High Resolution

 

0.3mm 0.0012in                 0.3mm 0.0012in

The additive nature of 3D printing enables the fabrication of multiple parts as printed in-place assemblies with moving or embedded parts. Interlocking components should have 0.300mm (0.011in) of clearance.

Aspect ratio
metal 3D printing design guide - Aspect ratio.png

Standard Resolution       High Resolution

 

8:1                                         8:1

Unsupported tall, thin features are challenging for debind and sintering processes and should be limited when possible. The ratio of height to width for tall walls or pillars should not exceed 8:1. Tall cylinders and walls are the least stable geometries.

Use Case Examples

Golf Clubs

Golf clubs require a high level of detail and precision in their design, which includes factors such as the contact face surface area and shape, cavity shape and depth, club angle, bounce angle, groove shapes, patterns and depths, weight and more. Clubs can also be customized the individual golfer's style and swing.

When designing a new or custom golf club, 3D printing allows manufacturers to design, prototype, test, and re-design quickly and easily, shortening the design phase to a matter of weeks. 

17-4 PH stainless steel is an excellent choice for golf clubs as it has the strength and hardness required to withstand a golfer's swing, and is resistant to corrosion due to wet conditions and outdoor weathering.

17-4-PGH Stainless Steel - Golf Club (Courtesy ofDesktop Metal)

Roller screws (also called planetary roller screws) have precision-ground threads that match multiple precision-ground rollers in the nut. They need to be extremely robust as they are often subjected to a high workload and wear-and tear. Roller screws are commonly found in applications where high force, speed, and position are required.

Designing a roller screw can often require several iterations, due to the tight tolerance requirements. This makes 3D printing a logical choice for the design and development of roller screws, as prototypes can be created and tested more quickly and affordably than with CNC machining or casting.

17-4 PH stainless steel is an excellent choice for roller screws because of it's strength, wear resistance, and ability to withstand a high load strain over time. It also had mild corrosion resistance, making it suitable for industrial use applications.

17-4-PGH Stainless Steel - Roller Screw (Courtesy ofDesktop Metal).jpg
Parachute Rings

Parachute rings are required to meet a high standard of strength and performance in order to perform perfectly. Besides strength, the parts are required to be smooth on all sides to prevent material binding as the parachute is deployed.

The challenge with manufacturing parachute rings is to create completely rounded edges throughout the ring. This is not possible with laser and water cutting, and traditionally parachute rings are created with a combination of hand fabrication and welding.

 

3D printing allows parachute rings to be manufactured with the precise geometries required, and post-processing can provide the smooth finish required for optimal performance.

17-4 PH stainless steel is able to withstand the high stress load and shock experienced by the rings when parachutes are deployed, and the mild corrosion resistance ensures a long lifetime for the part.

17-4-PGH Stainless Steel - Parachute Rings (Courtesy of Desktop Metal)

End effectors are a peripheral device that attaches to a robot's wrist, allowing the robot to interact with its task. They often have a gripping end customized for their specific task, and can often have complex geometries which can be time-consuming and expensive to manufacture with CNC machining or casting. 

17-4 PH stainless steel is a suitable material for end effectors and other manufacturing parts which are subject to wear-and-tear because it has great mechanical properties, a high level of hardness, and mild corrosion resistance.

17-4-PGH Stainless Steel - Parts End Effector (Courtesy of Desktop Metal)

Get your parts into production today

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