Mechanical Properties

Compared to the traditional manufacturing method such as casting or forging, some are concerned about the strength metal 3D printer can realize. The both L-PBF and EB-PBF fuse metal powders, the solidify it very quickly, so the strength they realize is basically the same as or more than the traditional manufacturing method depending on a metal.

Mechanical Properties of AM processed coupon
(Comparizon with other conventional processes)

LBM:Laser Beam Powder Bed ProcessEBM:Electron Beam Powder Bed Process

Ti Alloy Ti-6Al-4V

Materials & Processes Tensile Strength (MPa) Proof Stress (MPa) Elongation (%) Remarks
(Standard / Data source)
Forging >895 >825 >10 JISH4657-60(TAF6400)
Casting >895 >825 >6 JISH5801-60 (TAC6400)
LBM(Actual by JAMPT) 1,210 1,130 10.4 Concept Laser社 M2
EBM(Actual by JAMPT) 1,051 996 15.4 Arcam社 A2X

Pure Ti Grade-2

Materials & Processes Tensile Strength (MPa) Proof Stress (MPa) Elongation (%) Remarks
(Standard / Data source)
Forging 340~510 >215 >23 JISH4657-2 (TF340)
Casting >340 >215 >15 JISH5801-2 (TC340)
LBM >290 >180 >20 Data sheet from MS*
EBM 570 540 21 TRAFAM**

Nickel Alloy Inconel 718

Materials & Processes Tensile Strength (MPa) Proof Stress (MPa) Elongation (%) Remarks
(Standard / Data source)
Round Bar (<φ100mm) >1,280 >1,035 >12 JISG4901 NCF718 
Aging after Solution treatment (H)
Plate (<25mm) >1,240 >1,035 >12 JISG4902 NCF718 
Aging after Solution treatment (H)
LBM 1250 1000 12 Data sheet from MS*
(heat treated)
EBM 1240 920 12 Data sheet from MS*
(heat treated)

Nickel Alloy Inconel 625

Materials & Processes Tensile Strength (MPa) Proof Stress (MPa) Elongation (%) Remarks
(Standard / Data source)
Round Bar (<φ100mm) >690 >275 >30 JISG4901 NCF625 
Solution treatment (S)
Plate (0.5mm~70mm) >690 >275 >30 JISG4902 NCF625 
Solution treatment (S)
LBM 920 640 20 Data sheet from MS*

Stainless Steel SUS316L

Materials & Processes Tensile Strength (MPa) Proof Stress (MPa) Elongation (%) Remarks
(Standard / Data source)
Hot rolled Sheet >480 >175 >40 JISG4304 SUS316L
Cold rolled Sheet JISG4305 SUS316L
LBM 570 470 15 Data sheet from MS*
LBM(Actual by JAMPT) 679 576 42 M2 by Concept Laser

Maraging Steel

Materials & Processes Tensile Strength (MPa) Proof Stress (MPa) Elongation (%) Remarks
(Standard / Data source)
MAS1C >1,950 >1,890 >5 Data sheet from MS*
LBM(Actual by JAMPT) 1930 1867 5 M2 by Concept Laser

Al Alloy Al-10Si-Mg

Materials & Processes Tensile Strength (MPa) Proof Stress (MPa) Elongation (%) Remarks
(Standard / Data source)
Mold Test piece >180 >90 >2.5 JISH5202 As built
>260 >220 >1 JISH5202 T6-heat treated
LBM 460±20 240±10 6±2 Data sheet from MS*
(as-built@normal temp.)
LBM 360~390 210~220 6~8 Data sheet from MS*
(as-built@200℃)
LBM 350±10 230±15 11±2 Data sheet from MS*
(heat treated)

CoCr

Materials & Processes Tensile Strength (MPa) Proof Stress (MPa) Elongation (%) Remarks
(Standard / Data source)
Casting >665 >450 >8 JIST7402-1
Stretching >750 >550 >16 JIST7402-2 (Annealed)
LBM >1,050 >905 Data sheet from SLM Solutions
EBM 960 560 20 TRAFAM**

*MS : (Various) Equipment Manufacturers or Material Suppliers
**TRAFAM: Fundamental data from Technology Research Association for Future Additive Manufacturing