Austenitic - ferritic steel casting materials

Analysis

Material Content [%] Effective
JUNKER DIN No. C Si Mn Cr Ni Mo Cu N total*)
AF21NMN 1.4470 < 0,03 < 1,0 < 2,0 21,0 - 23,0 4,5 - 6,5 2,5 - 3,5 - 0,12 - 0,20 33,6
AF26N 1.4347 < 0,08 < 1,5 < 1,5 25,0 - 27,0 5,5 - 7,5 - - 0,10 - 0,20 27,4
AF27NMN 1.4460 < 0,05 < 1,0 < 2,0 25,0 - 28,0 4,5 - 6,0 1,3 - 2,0 - 0,05 - 0,20 33,2
AF25NM 1.4468 < 0,03 < 1,0 < 2,0 24,5 - 26,5 5,5 - 7,0 2,5 - 3,5 - 0,12 - 0,25 37,1
AF25NMK I 1.4515 < 0,03 < 1,0 < 2,0 24,5 - 26,5 5,5 - 7,0 2,5 - 3,5 0,80 - 1,30 0,12 - 0,25 37,1
AF25NMK 1.4517 < 0,03 < 1,0 < 1,5 24,5 - 26,5 5,0 - 7,0 2,5 - 3,5 2,75 - 3,50 0,12 - 0,22 37,1
AF27NM 1.4469 < 0,03 < 1,0 < 1,0 25,0 - 27,0 6,0 - 8,0 3,0 - 5,0 < 1,30 0,12 - 0,22 42,4
AF26NMK I 1.4469 < 0,03 < 1,0 < 2,0 24,5 - 27,0 6,0 - 8,5 3,2 - 4,0 0,50 - 1,50 0,15 - 0,30 40,7
AF27NMK 1.4517 < 0,03 < 1,0 < 1,5 26,0 - 28,0 5,0 - 8,0 3,5 - 4,5 2,50 - 4,0 0,15 - 0,30 42,5
AF27NC 1.4340 0,30 - 0,50 < 2,0 < 1,5 26,0 - 28,0 3,5 - 5,5 - - - -

*) PRE: % Cr + 3.3 x % Mo + 16 x % N2
Value < 40: Duplex material
Value > 40: Super duplex material


Technological properties

Material Delivery specification Technological properties at room temperature (minimum values) Service temperatureI)  
JUNKER DIN No.   Rp 0,2 [N/mm²] Rm [N/mm²] A5[%] Av ISO-V [Joule] [°C]  
AF21NMN 1.4462 DIN EN 10283 / DIN EN 10213-4 420 600 20 30 - 300
AF26N 1.4347 SEW 410 / DIN 10283 420 590 20 30 - 300
AF27NMN 1.4460 - 420 650 20 30 - 300
AF25NM 1.4468 SEW 410 / DIN 10283 480 650 22 50 - 300
AF25NMK I 1.4515 SEW 410 480 650 - 850 22 60 - 300
AF25NMK 1.4517 EN 10213-4 DIN EN 10283 480 650 22 50 - 300 1)
AF27NM 1.4469 DIN 10213-4 / DIN EN 10283 480 650 22 50 - 300 1)
AF26NMK I 1.4469 - 480 650 22 60 - 300
AF27NMK 1.4517 - 500 800 20 60 - 300
AF27NC 1.4340 SEW 410 - - - - 20 - 300

I) Most materials are suitable for use at subzero temperatures if metallurgical procedures are carefully observed.
1)and EN 10213

Contact

Gerd Knoppke

Phone:+49 2473 601 452

Fax:+49 2473 601 611

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