Meltio Mild Steel ER70-S

Product catalog summary

Material Overview
ER70-S, also known as low alloy carbon steel or mild steel, is a versatile material known for its strength, ductility, and cost-effectiveness. It is widely used in construction, automotive, and manufacturing due to its excellent weldability and machinability.

Physical Properties

Wire Density: 7.8 g/cm³
Melting Point: 1425 - 1485ºC (2600 - 2700°F)

Heat Treatment
Heat treatment is not mandatory for general applications. However, normalizing can improve microstructure and mechanical properties by achieving a uniform distribution of pearlite and ferrite, enhancing ductility and toughness.

3D Printing Parameters

Laser Power: 1100 W
Velocity: 7.5 mm/s
Argon Flow: 10 l/min
Layer Height: 1.0 mm
Wire Speed: 9.6 mm/s
Energy Density: 147 J/mm³

Wire Specifications

Diameter: 1.0 mm
Weight on Spool: 15 kg
Volume on Spool: 1923 cm³
Spool Type: BS300
Wire Coating: Uncoated

Chemical Composition

Fe: Balance
C: 0.07%
Mn: 1.45%
Si: 0.85%
S: 0.02%
P: 0.01%

Mechanical Properties

Ultimate Tensile Strength (UTS): 598 ± 5 MPa (XY), 525 ± 12 MPa (XZ)
Yield Strength: 484 ± 8 MPa (XY), 402 ± 37 MPa (XZ)
Elongation: 71 ± 1% (XY), 15 ± 9% (XZ)
Hardness: 175 HV-30

Microstructure and Density
The microstructure consists of a ferritic matrix with pearlite at grain boundaries. The relative density of 3D printed samples is 99.19%, with no detectable voids or defects.

Applications
ER70-S is suitable for manufacturing, tools, prototypes, and the automotive industry due to its low cost, machinability, ductility, and magnetic properties.

Disclaimer
Specifications are subject to change, and users must determine the suitability of the material for their applications. For further information, contact Meltio.

Catalog excerpts

Meltio Material Datasheet Rev 2.0 Meltio Mild Steel ER70-S ER70S-6/S42 4M21 3Si1 /AWSA5.18 ER70-S, also known as low alloy carbon steel or mild steel, is a highly versatile material due to its strength, ductility, and low cost. It is used in many applications, including construction, automotive and manufacturing. Its excellent weldability and machinability make it easy to work with, while its high ductility and toughness make it suitable for structural applications.

Open the catalog to page 1

Meltio Material Datasheet Tomography Computed Tomography Scan of 3D printed sample part in ER70-S without detectable voids or defects. Resolution of 24 pm per pixel. The investigation reveals that the microstructure of the ER70-S specimens consists of a ferritic matrix intermixed with pearlite at the grain boundaries, wherein the interlayers exhibit larger grain sizes owing to the heat generated during material deposition. Relative density as 3D printed Mechanical Properties Results show that specimens printed using Meltio’s wire-laser metal 3D printed process perform at the same level as samples...

Open the catalog to page 2

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