Sandvik 15R10 Strip steel

Datasheet updated

2022-07-19 13:08
(supersedes all previous editions)

Sandvik 15R10 is an austenitic chromium-nickel (CrNi) stainless steel used as a base material for Alleima coated strip steel. The product is particularly suited to many types of electric load carrying spring applications, such as contact springs and tactile domes.

Sandvik 15R10 is characterized by good corrosion resistance, mechanical strength and excellent fatigue and relaxation properties, as well as superior contact properties and/or solderability, achieved through the right choice of coating layer.

Standards

  • ASTM: (301)
  • EN Number: 1.4310
  • EN Name: X 10 CrNi 18-8

Chemical composition (nominal)

Chemical composition (nominal) %
C Si Mn P S Cr Ni Mo N
0.05 - 0.15 ≤1.50 ≤2.00 ≤0.045 ≤0.015 16.00 - 19.00 6.00 - 9.50 ≤0.80 ≤0.11

Chemical composition (nominal) %

C Si
Mn
P
S
Cr Ni Mo
N
0.05-0.15 ≤1.50 ≤2.00 ≤0.045 ≤0.015 16.00-19.00 6.00-9.50 ≤0.80 ≤0.11

Applications

Sandvik 15R10 is a suitable material for high strength components that require electronic conduction on or close to the surface. Typical applications include contact springs, tactile domes and various EMC shielding components, such as fingerstocks and shielding boxes.

Corrosion resistance

Good corrosion resistance is extremely important in spring applications to ensure that spring properties are not impaired. Sandvik 15R10 is based on an austenitic stainless steel substrate, which gives good corrosion protection in most spring applications. Compared with other low alloyed spring steel Sandvik Santronic 15R10 offers superior performance. However, all austenitic steels of this type are susceptible to stress corrosion cracking (SCC) when in contact with chloride-containing solutions at elevated temperatures.

Forms of supply

Sandvik Santronic 15R10 is supplied, as standard, in the cold rolled condition with a coating on either one or both sides and shipped in coils.

Substrate dimensions

The following thicknesses and widths can be supplied as standard.

Thickness range Width
mm in. mm in.
0.04 - 0.8 0.0016 - 0.0315 6 - 650 0.24 - 25.6

Coatings

See Sandvik Santronic surface coatings.

Surface finish

Sandvik Santronic 15R10 strip is normally supplied with a bright, cold rolled finish. Different surface brightness levels at intervals between 20-60% (reflectance value measured at a 60o angle in compliance with DIN 67530) can be supplied to meet individual customer requirements.

Surface roughness
Sandvik surface class Class limits, Ra Class mean, Ra
µm µin. µm µin.
Y6 0.2 - 0.5 0.008 - 0.020 0.32 0.013
Y7 0.1 - 0.25 0.004 - 0.010 0.16 0.006
Y8 < 0.125 < 0.005 0.08 0.003

Mechanical properties

At 20oC (68oF), nominal values
Tensile strength*,
Rm
Proof strength,
Rp0.2
Rp0.2/Rm Elongation,
A
MPa ksi MPa ksi
%
1400 203 1200 174 0.86 12
1700 247 1600 232 0.94 1.5
1900 276 1850 268 0.97 1.0
2050 297 2000 290 0.97 0.3

* Other tensile strength levels available on request.

Physical properties

Density: 7.9 g/cm3, 0.29 lb/in3

Resistivity: 0.8 μΩm (31.5 μΩin.)

Specific heat capacity: 500 J/kg °C (at 20°C/68°F)

Modulus of elasticity (x103): 185 MPa, 26 825 ksi (at 20°C/68°F)

Thermal expansion mean values in temperature ranges (x10-6)
Temperature, °C per °C Temperature, °F per °F
20 - 100 15.5 68 - 200 8.5
20 - 200 16 68 - 400 9
20 - 300 16.5 68 - 550 9
Thermal conductivity
Temperature, °C W/m °C Temperature, °F Btu/ft h °F
20 15 68 8.5
100 16 200 9
300 19 600 11

Disclaimer: Recommendations are for guidance only, and the suitability of a material for a specific application can be confirmed only when we know the actual service conditions. Continuous development may necessitate changes in technical data without notice. This datasheet is only valid for Alleima materials.