12-2020

IPCO 1500SM: Precipitation hardened martensitic stainless steel belt

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IPCO 1500SM

Precipitation hardenedmartensitic stainless steel belt

Belt grade characteristics

Forms of supply

The IPCO 1500SM belt grade is made of low carbon,
martensitic, precipitation hardening, stainless steel of type15-5 PH and is characterised by:• Excellent static strength• Excellent fatigue strength• Good corrosion resistance• Very good wear resistance• Very good repairability

The belts are, as standard, delivered in a precipitation
hardened condition with a mill finish and have well-roundededges. If required practically any surface finish can besupplied. Perforated belts are also available.
The belts are levelled and straightened to obtain optimal
flatness and straightness. The belts can be supplied in open
lengths, with the ends prepared for welding on site, or inendless condition with a welded joint.

IPCO 1500SM is a high strength steel with excellent
mechanical properties. This, in combination with good
corrosion resistance, makes it the ideal choice forapplications in very harsh conditions. Another advantage
is that it is easy to repair.

For tracking, the belts can be provided with V-ropes, either
rubber or in the form of a specially designed steel spiral.
If required, the product side of the belt can be fitted withretaining strips to keep the conveyed material on the belt
or with transverse flights to prevent material from sliding
backwards when the belt is steeply inclined.

Chemical composition (typical), %CSiMnCr

NiCuTa

Nb

0.03

0.5

0.6

15

5.0

3.3

0.3

0.3

Different tolerance grades are available to ensure that thebest belt can be selected from an economic point of view.
Recommendation and advice are available from your local
IPCO Office.

Standards
EN1.4542

AISI

630

Mechanical properties
Static strength at 20 °C (68 °F), typical values
Position

Proportional limit Yield strength
Rp0.01

Parent material

Rp0.2

MPa

ksi

1 380

200

Tensile strength
Rm

MPa

ksi

MPa

Elongation
A (%)

Weld factor

Hardness

Rm weld /Rm

Vickers,

ksi

HV5

1 420

206

1 500

218

7

Transverse weld (not heat treated)

1 100

160

1 150

167

50.77

460
*Transverse weld (heat treated)

1 260

1831 310

190

50.87

**See figure 1 on page 2.

At high temperatures, typical values
Temperature

Yieldstrength Rp0,2Tensile
strength RmElongation
A (%)

°C°F

MPaksiMPaksi

100

212

1 270

184

1 360

197

10200

392

1 150

166

1 290

187

11300

572

1 070

155

1 210

175

11400

752

1 020

148

1 140

165

9An increase in mechanical strength (hardness) and brittlenesscan be noticed after long term use between 350–450 °C(660–840 °F).

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Hence the following recommendation: If an operation
temperature of or above 350 °C (660 °F) is considered, yourlocal IPCO office should be contacted for technical assistance.
Impact strength
This belt grade is not recommended for use at low
temperature, i.e. such as in freezing operations.
Fatigue strength
The fatigue limit is defined as the reverse bending stress at
which 50% of the test specimen withstand a minimum of
2 × 106 load cycles. These values refer to 20 °C (68 °F),a normal dry atmosphere and standard prepared specimen.
The fatigue limit for the parent material is approximately± 580 MPa (84 ksi).

IPCO 1500SM: Precipitation hardened martensitic stainless steel belt

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Physical properties

It has good resistance to:• Organic acids, such as acetic acid, up to highconcentrations and high temperatures and formic acidat low concentrations and high temperatures.
• Inorganic acids, e.g. sulphuric acid at low concentrationand phosphoric and nitric acids at moderateconcentration and temperatures.
• Ammonium hydroxide up to boiling point and sodiumhydroxide at moderate concentrations and temperatures.

Density, ρ, at 20 °C (68 °F)
7 800 kg/m3, 0.29 lb/in3
Modulus of elasticity, E, at 20 °C (68 °F)
197 000 MPa (28 600 ksi)
Thermal conductivity, λTemp

°C

20

100

200

300

400°F

68

212392

572

752

W/mK

16171920

22

Btu/ft h °F

9.2

9.8

11.0

11.6

12.7

Specific heat capacity, Cp
Temp

°C

20

100

200

300

400°F

68

212

392

572

752

kJ/kgK

0.46

Btu/lb °F

0.11

Thermal expansion, αTemp°C

20 – 100

20 – 200

20 – 300

20 – 400°F

68 – 212

68 – 392

68 – 572

68 – 752

10-6/ °C

10.8

10.8

11.2

11.3

10 / °F6.0

6.0

6.2

6.3

-6Resistivity, ρ at 20 °C (68 °F)
0.8 μΩm

IPCO 1500SM is not suitable to use in any concentration ofhydrochloric acid, or in phosphoric and nitric acids of highconcentration and high temperature, and sulphuric acid ofmoderate and high concentration at elevated temperatures.
Pitting and crevice corrosion
The steel may be sensitive to pitting, even in solutions of a
relative low chloride content. When in continuous operation
at room temperature, IPCO 1500SM has good resistance topitting providing that the belt is kept clean.
Stress corrosion cracking
Stress corrosion cracking, although occurring relatively
infrequently, can be a cause of failure in stainless steels.
It occurs at temperatures above about 70 °C (160 °F), if thesteel is subjected to tensile stresses and comes into contact
with certain solutions, particularly those containing chlorides.
Hydrogen embrittlement
Hydrogen embrittlement is a potential danger to all highstrength martensitic steels whenever the reduction ofhydrogen ions to atomic hydrogen occurs. If this is the case,contact your local IPCO office.

Hardness HV600Magnetic properties

Heat-treated weld
500Remanence, Br0.6 Wb/m2

Coercive force, Hc< 2 500 A/m

Max relative permeability, μr

150400300Not heat-treated weld
200

The thermal conductivity of precipitation hardening steel
is comparable to austenitic stainless steels, but the thermalexpansion is much lower. This makes the precipitationhardened steel less sensitive to thermal strain and bucklingcaused by uneven temperature.

-10-50mm from weld-centre

510Figure 1. Example of hardness profile across a transverse weld, with andwithout heat-treatment in a IPCO 1500SM belt.

Corrosion resistance

WeldingGeneral corrosion
IPCO 1500SM shows a very good corrosion resistance,
equivalent to IPCO 1200SA in rural and mild industrial
atmosphere and almost equal good when exposed tocoastal atmosphere.

Joints with very good strength and toughness can beformed in IPCO 1500SM. A suitable fusion welding method isgas-shielded arc welding, with the TIG method as first choice.
If welding wire is needed, IPCO 1650SM should be used.

Further information concerning method and equipment etc.
required can be obtained from your local IPCO office.

Data given in this document are nominal values and are not guaranteed. Information relating to material, specifications, properties and/or performance isintended as guidance on determining suitability, and may be subject to change without notice.

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