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Material Composition for DIN 1.4852 Microalloy

Material Composition for DIN 1.4852 Microalloy

Material Composition for DIN 1.4852 Microalloy

(OP)
I am looking for a chemical composition and mechanical test conditions for Gx40NiCrNb3525, Ti,Zr

RE: Material Composition for DIN 1.4852 Microalloy

Dunno about the Ti, Zr suffix you have, but in the Key to Steel CD (1999) this is what it says for material code 1.4852 Heat resisting steel GX40NiCrSiNb35-25

Composition: (min/max)

C    0.35    0.24
Si    1.00    2.50
Mn    0    1.50
P    0    0.035
S    0    0.030
Cr    24.0    26.0
Ni    33.0    35.0
Nb    0.80    1.80


Heat treatment condition
State of delivery - Cast

Properties at ambient temperature

0.2% yield stress    >=220 N/mm2
Tensile strength    >=400 N/mm2
Elongation (Lo =5do) up to 25 mm wall thickness    5%

At elevated temperatures

1% 10 000 hr creep limit


700 C        >=72 N/mm2
800 C        >=41 N/mm2
900 C        >=22 N/mm2
1000C        >= 9 N/mm2
1100 C        >= 2 N/mm2

Shrinkage    - 2.5%

Working temperature <=1100 C

Physical props:

Thermal expansion between 20 and 400 C

10(-6)K(-1)

400    15.5
800    17.0
1000    18.0

Density (20C)    8.0 kg/dm3

Spec heat (20C)    8.0 J/g.K

Heat conductivity    14.6 W/(K.m)

Structure Austenite carbide

Welding    Yes

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