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Chemical composition % of the ladle analysis of grade Type440F

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) N(%)
0.95-1.20 1 1.25 1.25 Max 0.10-0.35 16.0-18.0 0.75 0.75
Type440F
Mechanical properties of grade Type440F
Proof strength
Rp0.2 (MPa)		 Tensile strength
Rm (MPa)		 Impact energy
KV (J)		 Elongation at fracture
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition Brinell hardness (HBW)
433 (≥) 318 (≥) 43 21 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 242
Physical properties of grade Type440F
Property Density
kg/dm3		 Temperature T
°C/F		 Specific heat
J / kgK		 Thermal conductivity
W/mK		 Electric resistance
µΩ·cm		 Modulus of elasticity
kN/mm2		 Expansion rate
934 (≥) 314 (≥) 22 33 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 143
Temp.
°C/°F		 Creep strain limit
(10000h)
(Rp1,0) N/mm2		 Creep rupture strength
(10000h)
(Rp1,0) N/mm2
978 843 929
Type440F Range of products
Product type Products Dimension Processes Deliver Status
Plates / Sheets Plates / Sheets 0.08-200mm(T)*W*L Forging, hot rolling and cold rolling Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Steel Bar Round Bar, Flat Bar, Square Bar Φ8-1200mm*L Forging, hot rolling and cold rolling, Cast Black, Rough Turning, Shot Blasting,
Coil / Strip Steel Coil /Steel Strip 0.03-16.0x1200mm Cold-Rolled & Hot-Rolled Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Pipes / Tubes Seamless Pipes/Tubes, Welded Pipes/Tubes OD:6-219mm x WT:0.5-20.0mm Hot extrusion, Cold Drawn, Welded Annealed, Solution and Aging, Q+T, ACID-WASHED
Cross Reference Table(Equivalent Grade)
Grade Standard Country Application
A 582 S44020
Standard Specification for Free-Machining Stainless Steel Bars
S44020
Martensitic Chromium Free Machining Stainless Steel
A 582 S44023
Standard Specification for Free-Machining Stainless Steel Bars
S44023
Martensitic Chromium Selenium Bearing Free Machining Stainless Steel

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