EN 1.4362 / LEAN DUPLEX UNS S32304 / EDX 2304

Lean Duplex according to NORSOK M-120 MDS YD35 has an improved balanced chemistry of chromium, molybdenum and nitrogen content, resulting in a PRE value ≥ 28 and increased mechanical strength compared to the standard EN 1.4362 / UNS 32304. This grade outruns AISI 316L acc. to both EN 1.4404 & EN 1.4436 with respect to pitting corrosion resistance. Due to risk of embrittlement, duplex steels should not be used at temperatures above 250 – 325°C.

Trademark information: EDX 2304 is a trademark owned by Outokumpu OY.

Applications
The main applications for EN 1.4362 / Lean Duplex UNS S32304 / EDX 2304 are for details with special requirements for high corrosion resistance.

EN 1.4362 / Lean Duplex UNS S32304 / EDX 2304 is characterized by:
- Good resistance to stress corrosion cracking.
- Good resistance to pitting and crevice corrosion.
- High resistance to general corrosion.
- High mechanical strength.
- High resistance to erosion corrosion and corrosion fatigue.
Heat Tratment and Weldability

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

Weldability: Very good
Chemical Composition (Specific for Plates)

Weight % C Mn P S Si Cr Ni Mo N Cu PREN

Min. 22,0 3,50 0,10 0,05 0,10 28

Max. 0,030 2,00 0,035 0,015 1,00 24,0 5,50 0,60 0,20

PREN = % Cr + 3.3 % Mo + 16 % N ≥ 28
Reference Standards
General:
- PED 2014/68/EU Annex I section 4.3
- AD2000 W0 (W2/ W10)
- NACE MR0175/ISO 15156-3 and NACE MR0103/ISO 17945
Plate, sheet and coil:
- ASTM A240, EN 10028-7, EN 10088-2, EN 10088-4, Norsok M-120 MDS YD35
Hot Rolled Angle Bar:
- ASTM A276, EN 10088-3, Norsok M-120 MDS YD36 (SVERDRUP MDS YD36 REV. 03)
Hollow Section and other Cold Formed Profiles:
- ASTM A240, Norsok M-120 MDS YD37
Laser Welded Profiles:
- Sverdrup MDS EDX-X-SE Rev.1, a modified version of Norsok MDS YD37 Rev.0 to fit production by laser welding.
Other products:
- As per applicable ASTM and/or EN standards and Norsok M-120 MDS

Mechanical Properties (Typical)

	Yield strength Rp0.2, MPa	Tensile strength Rm, MPa	Elongation [%]	Hardness [HB]	Impact, Charpy-V, -46ºC [J]
PLATE CR (COIL)	≥ 450	650-850	≥ 25		≥ 45
PLATE HR (COIL)	≥ 450	650-850	≥ 25	≤ 290	≥ 45
PLATE (QUARTO)	≥ 450	650-800	≥ 25	≤ 290	≥ 45
ANGLE BAR	≥ 450	≥ 600	≥ 25	≤ 290	≥ 45

Stocked Products and Dimensions

Plate

MEASUREMENTS	KG/PLATE
1,5 X 1500 X 3000 mm	54
2 X 1500 X 3000 mm	72
2 X 2000 X 6000 mm	192
3 X 1500 X 3000 mm	108
3 X 1500 X 6000 mm	216
3 X 2000 X 6000 mm	288
4 X 1500 X 3000 mm	144
4 X 1500 X 6000 mm	288
4 X 2000 X 6000 mm	384
5 X 1500 X 3000 mm	180
5 X 1500 X 6000 mm	360
5 X 2000 X 6000 mm	480
6 X 1500 X 3000 mm	216
6 X 1500 X 6000 mm	432
6 X 2000 X 6000 mm	576
8 X 1500 X 3000 mm	297
8 X 1500 X 6000 mm	593
8 X 2000 X 6000 mm	791
10 X 1500 X 3000 mm	371
10 X 1500 X 6000 mm	742
10 X 2000 X 6000 mm	989
12 X 1500 X 3000 mm	445
12 X 1500 X 6000 mm	890
12 X 2000 X 6000 mm	1187
15 X 1500 X 3000 mm	556
15 X 1500 X 6000 mm	1112
15 X 2000 X 6000 mm	1484
20 X 1500 X 3000 mm	742
20 X 1500 X 6000 mm	1483
20 X 2000 X 6000 mm	1978
25 X 1500 X 3000 mm	927
25 X 1500 X 6000 mm	1854
25 X 2000 X 6000 mm	2472
30 X 1500 X 3000 mm	1112
30 X 1500 X 6000 mm	2225
30 X 2000 X 6000 mm	2966
35 X 1500 X 3000 mm	1298
40 X 1500 X 3000 mm	1483
40 X 2000 X 6000 mm	3955
50 X 1500 X 3000 mm	1854
50 X 2000 X 6000 mm	4944

Hollow Section

MEASUREMENTS	KG/M
50 X 50 X 4 mm	5.96
60 X 60 X 4 mm	7.25
80 X 80 X 5 mm	12.13
100 X 100 X 6 mm	17.76
120 X 120 X 6 mm	21.60
150 X 100 X 6 mm	23.02
150 X 150 X 6 mm	27.36
150 X 150 X 8 mm	37.8
200 X 200 X 8 mm	49.43
250 X 250 X 8 mm	61.95

Angle Bar – Hot Rolled

MEASUREMENTS KG/M

50 X 50 X 5 mm 3.85

60 X 60 X 6 mm 5.53

80 X 80 X 8 mm 9.85

100 X 100 X 10 mm 15.40

Angle Bar - Laser Welded

MEASUREMENTS	KG/M
40 x 40 x 4 mm	2,43
120 x 120 x 12 mm	21,89
150 x 150 x 12 mm	27,64
200 x 200 x 15 mm	45,70
100 x 50 x 8 mm	9,60
150 x 100 x 8 mm	15,79
200 x 100 x 10 mm	22,97
200 x 100 x 15 mm	33,86
200 x 150 x 8 mm	21,67

Coil

1500 MM 2000 MM

1,5 mm 3 mm

2 mm 4 mm

3 mm 5 mm

4 mm 6 mm

5 mm

6 mm
H-beam

MEASUREMENTS

100 X 100 X 6 X 8 mm

150 X 150 X 8 X 10 mm

200 X 200 X 8 X 12 mm

250 X 250 X 10 X 15 mm

300 X 300 X 10 X 15 mm

350 X 350 X 12 X 20 mm
Flat Bar – Laser Cut from Plate

MEASUREMENTS KG/M

40 x 6 mm 1,93

80 x 8 mm 5,14

100 x 8 mm 6,42

100 x 10 mm 8,02

120 x 12 mm 11,52
U-Profile - Laser Welded

MEASUREMENTS KG/M

100 x 55 x 5 x 8 mm 10,15

200 x 80 x 6 x 12 mm 23,81

1500 MM	2000 MM
1,5 mm	3 mm
2 mm	4 mm
3 mm	5 mm
4 mm	6 mm
5 mm
6 mm

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Weight %	C	Mn	P	S	Si	Cr	Ni	Mo	N	Cu	PREN
Min.						22,0	3,50	0,10	0,05	0,10	28
Max.	0,030	2,00	0,035	0,015	1,00	24,0	5,50	0,60	0,20

MEASUREMENTS	KG/M
50 X 50 X 5 mm	3.85
60 X 60 X 6 mm	5.53
80 X 80 X 8 mm	9.85
100 X 100 X 10 mm	15.40

MEASUREMENTS	KG/M
40 x 6 mm	1,93
80 x 8 mm	5,14
100 x 8 mm	6,42
100 x 10 mm	8,02
120 x 12 mm	11,52

MEASUREMENTS	KG/M
100 x 55 x 5 x 8 mm	10,15
200 x 80 x 6 x 12 mm	23,81

Applications

Heat Tratment and Weldability

Chemical Composition (Specific for Plates)

Reference Standards

Mechanical Properties (Typical)

Stocked Products and Dimensions

Plate

Hollow Section

Angle Bar – Hot Rolled

Angle Bar - Laser Welded

Coil

H-beam

Flat Bar – Laser Cut from Plate

U-Profile - Laser Welded

Related materials

AISI 329

22Cr duplex

25Cr duplex (Zeron 100)

SS LD24

Lean duplex LDX 2101

25Cr duplex (2507)