MATERIAL DESCRIPTION

Sverdrup Steel SS LD24 is a low alloyed Lean Duplex stainless steel developed with increased Cr, Mo and N content to achieve a PRE of ≥24. The microstructure consists of a phase balance of approximately 50 % ferrite and 50 % austenite that provides much higher yield strength than AISI 304 and AISI 316. Also, it exhibits good formability and corrosion resistance.

 

Applications

The main applications are for details with corrosion resistance better than 304L.

UNS S32001 is characterized by:
• Good resistance to stress corrosion cracking.
• Good resistance to general corrosion.
• High mechanical strength.
• High resistance to erosion corrosion and corrosion fatigue.

Heat Treatment
Solution annealing at 1020 – 1100°C followed by water quenching.

Weldability
Very good.

Chemical Composition

Weight % C Si Mn S P Cr Ni Mo N
Min.     4,00     19,50 1,50   0,05
Max. 0,030 1,00 6,00 0,015 0,035 21,50 3,00 0,60 0,17

PRE value %Cr + 3.3%Mo + 16%N of ≥24

Product Standards: EN 1,4482, UNS S32001, EN 10088-2, EN 10088–4, EN 10028–7, ASTM A240, ASTM A480, ASME SA240

Approvals: Sverdrup Steel MDS SS LD24

Mechanical Properties

  Yield strength Rp0.2,
MPa
Tensile strength Rm,
MPa
Elongation
[%]
Hardness
[HB]
Surface
CR (COIL) ≥ 530 700-900 ≥ 25   2B
HR (COIL) ≥ 480 660-900 ≥ 30 ≤ 290 1D
PLATE ≥ 450 650-850 ≥ 30 ≤ 290 1D

Plate Stock

MEASUREMENTS KG/PLATE
1,5 x 1500 x 3000 mm 54
1,5 x 1500 x 6000 mm 108
2 x 1500 x 3000 mm 72
2 x 1500 x 6000 mm 144
2,5 x 1500 x 3000 mm 90
2,5 x 1500 x 6000 mm 180
3 x 1500 x 3000 mm 108
3 x 1500 x 6000 mm 216
4 x 1500 x 3000 mm 144
4 x 1500 x 6000 mm 288
5 x 1500 x 3000 mm 180
5 x 1500 x 6000 mm 360
6 x 1500 x 3000 mm 216
6 x 1500 x 6000 mm 432
8 x 1500 x 3000 mm 296,64
8 x 1500 x 6000 mm 593,28
10 x 1500 x 3000 mm 370,80
10 x 1500 x 6000 mm 741,60
12 x 1500 x 3000 mm 444,96
12 x 1500 x 6000 mm 889,92
15 x 1500 x 3000 mm 556,20
15 x 1500 x 6000 mm 1112,40
20 x 1500 x 3000 mm 741,60
20 x 1500 x 6000 mm 1483,20
25 x 1500 x 3000 mm 927
25 x 1500 x 6000 mm 1854
30 x 1500 x 3000 mm 1112,40
30 x 1500 x 6000 mm 2224,80

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Equivalent Standards

  • EN 1.4482
  • UNS S32001
Tags: Coil / Plate