Ambient temperature mechanical properties of austenitic-ferritic (duplex) stainless steel long products to BS EN 10088-3

Introduction

BS EN 10088-3 gives the mechanical properties for stainless steel semi-finished products, bars, rods and sections for general purposes. This article covers austenitic-ferritic (duplex) stainless steels. The properties given are proof strength, tensile strength, elongation and hardness.

The data given is not intended to replace that shown in individual standards to which reference should always be made.

BS EN 10088-3:2014 Edition

BS EN 10088-3 was originally published in 1995. The second version, BS EN 10088-3:2005, has been superseded by BS EN 10088-3:2014.

The tables shown here only have the 2014 tensile property ranges of the austenitic-ferritic (duplex) steels. 6 new grades have been added:

1.4062, 1.4162, 1.4482, 1.4662, 1.4669, 1.4658

This article does not include bright products.

BS EN 10088-3 mechanical properties - austenitic-ferritic (duplex) stainless steels

 

Designation Mechanical properties min unless stated
Steel name Steel number Max thickness d mm Proof strength Rp0.22) N/mm2 Tensile strength Rm 2) N/mm2 Elongation A2) % Max hardness1) HB
Austenitic-ferritic stainless steels-standard grades
X2CrNiN23-4 1.4362 160 400 600/830 25 260
X3CrNiMoN27-5-2 1.4460 160 450 620/880 20 260
X2CrNiMoN22-5-3 1.4462 160 450 650/880 25 270
Austenitic-ferritic stainless steels-special grades
X2CrNiN22-2 1.4062 160 380 650/900 30 290
X2CrCuNiN23-2-2 1.4669 160 400 650/900 25 300
X2CrNiMoSi18-5-3 1.4424 50 450 700/900 25 260
50<160 400 680/900 25 260
X2CrMnNiN21-5-1 1.4162 160 400 650/900 25 290
X2CrMnNiMoN21-5-3 1.4482 160 400 650/900 25 -
X2CrNiMnMoCuN21-5-3 1.4662 160 450 650/900 25 290
X2CrNiMoCuN25-6-3 1.4507 160 500 700/900 25 270
X2CrNiMoN25-7-4 1.4410 160 530 730/930 25 290
X2CrNiMoCuWN25-7-4 1.4501 160 530 730/930 25 290
X2CrNiMoN29-7-2 1.4477 10 650 800/1050 25 310
10<160 550 750/1000 25 310
X2CrNiMoCoN28-8-5-1 1.4658 5 650 800/1000 25 300


Note

  1. Only for guidance.
  2. For rods, only the tensile strength values apply.

These austenitic-ferritic steels are in the solution-annealed condition. The solution treatment may be omitted, if the conditions for hot working and subsequent cooling are such that the requirements for the mechanical properties of the product and the resistance to intergranular corrosion as defined in EN ISO 3651-2 are obtained.

 

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