Engineered metals
for precision industries

Data sheet - ROBERT 3

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ROBERT 3
9SMnPb28

Fe reste C0-0.14 S0.27-0.33 Mn0.9-1.3 Pb0.15-0.35

Chemical composition

Pb0.15-0.35

P0.11 max

FeBAL

Mn0.90-1.30

Si0.05 max

S0.27-0.33

C0.14 max

Alloy name
RLSA no.903
EN standard
DIN standard1.0718
UNS no.*

*Unified Numbering System (USA)

Characteristics and main uses

Physical properties Units
Density (20°C) 7,85 Kg/dm³
Melting point 1500-1540 °C
Longitudinal elasticity modulus GPa
Thermal conductivity W/m·K
Electrical conductivity m/Ω·mm²
Electrical resistivity µΩ·m
Linear expansion Coefficient 10⁻⁶·K⁻¹
IACS (International Annealed Copper Standard) %
Poisson's ratio
Capabilities
Corrosion resistance1
Hot deformation
Cold deformation4
Electrodepositing
Diamond cutting
Nitriding
Mechanical polishing
Welding without filler
Brazing

1 poor | 2 average | 3 good | 4 very good | - no info

Heat Treatment / Hardening
Annealing temperature °C
Temperature for stress relief treatment °C
Hardening temperature °C
Hardening treatment time hour(s)

Alloy mechanical properties

ROBERT 3
Possible hardness range 100 - 200 HV
Possible Rm range 300 - 610 MPa

Non-exhaustive list of grades

Grade Condition Hardness
(HV: Vickers)
min - max
Rm
(MPa)
min - max
Rp 0.2
(MPa)
min - max
Elongation
(%) where L0 = 100mm
min - max
L0 Grain size
(µm)
min - max

Do not hesitate to ask us for your specific grades and parameters. We can make productions according to your needs.

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Packaging
EN10204 certificate