ATI 444™ Ferritic Stainless Steel


UNS S44400


Product Documents

Documents

Product Specifications By Form

Plate

444 plate produced to the commercial chemistry will not meet the mechanical properties required per ASTM A240/ASME SA-240. As a result, Allegheny Ludlum uses a modified chemistry with higher nitrogen to meet these requirements.


Composition

ElementMinimum (weight %)Maximum (weight %)Typical (weight %)
Cr17.519.5 
Mo1.752.50 
Ni 1.00 
Si 1.00 
Mn 1.00 
N0.0400.070 
P 0.040 
S 0.030 
C 0.025 
(Ti+Cb)[0.20+4x(C+N)]0.80 

Density

lb/in3g/cm3
0.2807.75

Tensile Strength

ksiMPa
60 min415 min

Yield Strength

ksiMPa
40 min275 min

Hardness

96 HRB max

Elongation

20% min

Specifications

ASTM A240, ASME SA-240

Sheet

Composition

ElementMinimum (weight %)Maximum (weight %)Typical (weight %)
Cr17.519.5 
Mo1.752.50 
Ni 1.00 
Si 1.00 
Mn 1.00 
P 0.040 
N 0.035 
S 0.030 
C 0.025 
(Ti+Cb)[0.20+4x(C+N)]0.80 

Density

lb/in3g/cm3
0.2807.75

Tensile Strength

ksiMPa
60 min415 min

Yield Strength

ksiMPa
40 min275 min

Hardness

96 HRB max

Elongation

20% min

Specifications

ASTM A240, ASME SA-240

Strip

Composition

ElementMinimum (weight %)Maximum (weight %)Typical (weight %)
Cr17.519.5 
Mo1.752.50 
Ni 1.00 
Si 1.00 
Mn 1.00 
P 0.040 
N 0.035 
S 0.030 
C 0.025 
(Ti+Cb)[0.20+4x(C+N)]0.80 

Density

lb/in3g/cm3
0.2807.75

Tensile Strength

ksiMPa
60 min415 min

Yield Strength

ksiMPa
40 min275 min

Hardness

96 HRB max

Elongation

20% min

Specifications

ASTM A240, ASME SA-240

Contact

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