Laser Build Guide

Getting Started

Machinery
Standard
Lead Time
Build Volume
(XxYxZ mm)
Laser Type
Laser Spot Diameter
Layer Thickness
Minimum Wall
Thickness
Accuracy
5 to 10 days
(PA 2200)
300x300x600
 
CO2
.6mm
0.1 mm
1.0 mm
± 0.3%
(lower limit on ± 0.3mm)
Powder Material
Colour
Character
Applications
PA 2200
Fine polyamide
Very fine multi-functional polyamide Illustrative models, functional parts/ end products, spare parts
Finish
Remove Excess Powder
Glass Bead Blast
Tumble
Natural
X
X
 
       
Painting and Dyeing Parts
Options
Benefits
Key Points
Painting SLS Parts

acrylics, enamel, varnish, oil

Smooth texture; colour appeal

Use 2-3 coats; allow to dry between coats; paint in one direction; avoid applying too much paint; use masking tape for straight edges between colours; clean brush and allow to dry before switching colours

       
Dyeing SLS Parts

clothing dye (e.g Ril)

Smooth texture; colour appeal

Use small amount of dye; add as needed; mix dye in warm water; bring to boil; place in mixture for 20-30 minutes; continually reorient for even penetration; remove, wash, let dry

   

Notes:

1. Parts should be washed throughly and etched before being painted or dyed. 2. Polyamides are porous and absorb; test to ensure appropriate texture and colour; also when painting one side of a thin part or two sides different colours. 3. Dyeing is limited to one colour per part; dye pigment must be darker than current colour. 4. Painted and dyed parts will look lighter when wet; colour will darken when dry. 5. Spray the finished part with a clear coat of varnish or lacquer to seal it.

General material data

PA 2200
 
 

Average grain size

60 μm
 
 

Bulk density

0.435 - 0.445 g/ cm3
 
 

SLS Part Density

0.9 - 0.95 g/cm3
 
 

Mechanical properties

PA 2200
 
 

Tensile modulus

1700 ± 150 N/mm2
 
 

Tensile strength

45 ± 3 N/mm2
 
 

Elongation at break

20 ± 5 %
 
 

Ball indent hardness

77.6 ± 2 N/mm2
 
 

Thermal properties

PA 2200
 
 

Melting point

172 - 180 °C
 
 

Heat conductivity

-
 
 

Electrical properties

PA 2200
 
 

Specific resistance

-
 
 
Machinery
Standard Lead Time
Maximum Build
(XxYxZ mm)
Laser Type
Minimum Feature
Size (mm)
Layer Thickness(um)
Minimum Wall Thickness(mm)
Operation Mode
5 to 10 days
250x250x215
Yb-fibre 200 W
.38
20-40
.3-.4
Nitrogen
5 to 10 days
250x250x325
Yb-fibre 400 W
.38
30
.3-.4
Nitrogen, Argon
Powder Material
Colour
Character
Machinery
Applications
CobaltChrome MP1
Cobalt-chrome
molybdenum-superalloy
Excellent mechanical properties, corrosion and temp. resistance
EOS M 270
EOS M 280
Medical devices and high temp.engineering, e.g. aero engines, turbines
Direct Metal 20
Bronze-based alloy
Good mechanical properties, very easy to finish
EOS M 270
Injection mould tool inserts, other tooling applications, prototype parts, fixtures, test parts
MaragingSteel MS1
Hardenable steel
Excellent strength, high toughness, easily machinable
EOS M 270
Series injection tooling, high volume production, high performance parts
StainlessSteel GP1
Stainless steel
Good mechanical properties, excellent ductility in laser processed state
EOS M 280
Engineering applications, industrial parts, prototypes, tooling
Titanium Ti64
Light titanium alloy
Good mechanical properties, excellent ductility in laser processed state
EOS M 280
Aviation and engineering parts requiring a combination of high mechanical properties and low weight, biomedical implants
Finish
Look
Reduced Part Stress
Larger Surface Features
Some Cosmetic Effect
Smooth Finish
Reflective Quality
Reduced Corrosion
Shot Peening
X
X
X
    X
Medium Polished
X
 
 
X X X

Mechanical properties

Cobalt Chrome MP1
(at 20 °C)
Direct Metal
20
Maraging Steel
MS1
Stainless Steel
GP1

Ultimate tensile strength

(a)1200 ± 150 MPa
(b) 1100 ± 100 MPa
400 MPa
(a) 1100 MPa ± 100 MPa
(b) 1950 MPa ± 100 MPa
(a) 960 ± 50 Mpa
(b) 980 MPa

Yield strength
(Rp 0.2 %)

(a) 800 ± 100 MPa
(b) 600 ± 50 MPa
200 MPa
(a) 1000 MPa ± 100 MPa
(b) 1900 MPa ± 100 MPa
(a) 570 ± 50 MPa
(b) typical 550 Mpa

Elongation at break

(a) min. 8 %
(b) min. 20 %
 
(a) 8 ± 3 %
(b) 4 ± 1 %
(a) 32 ± 5 %
(b) 31 %

Young’s modulus

(a) 190 ± 20 GPa
(b) 200 ± 20 GPa
80 GPa
(a) 160 GPa ± 20 GPa
(b) 180 GPa ± 20 GPa
(a) 170 ± 30 GPa
(b) 180 GPa

Hardness

35 - 45 HRC
115 HV
(a) 33-37 HRC
(b) 50-54 HRC
approx. 230 ± 20 HV1

Mechanical properties

Titanium
Ti64
 
 
 

Ultimate tensile strength

(a) 1200 ± 30 MPa
(b) 1050 ± 20 MPa
 

 

 

Yield strength
(Rp 0.2 %)

(a)1 040 ± 30 MPa
(b) 1000 ± 20 MPa
 
 
 

Elongation at break

(a) 11.3 ± 1.3 %
(b) 14.2 ± 0.4 %
 
 
 

Young’s modulus

 
 
 
 

Hardness

(a) 285 ± 8 HV5
(b) 335 ± 6 HV5
 
 
 

 

Physical properties

Cobalt Chrome
MP1
(at 20 °C)
Direct Metal
20
Maraging Steel
MS1
Stainless Steel
GP1

Relative density

approx. 100 %
up to 92 %
approx. 100 %
approx. 100 %

Density

8.3 g/cm³
up to 7.6 g/cm³
up to 0.27 lb/in³
8.0 - 8.1 g/cm³
7.8 g/cm³

Physical properties

Titanium
Ti64
 
 

 

 
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