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320S18 Application:austenitic special steel
Category Type Steel grade Country
Grades Special Alloy 320S18 UK

Chemical composition % of the ladle analysis of grade 320S18

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) Mo(％) Ti(%)
Max 0.08 Max 1.00 Max 2.00 Max 0.045 Max 0.03 16.5-18.5 10.5-13.5 2.00-2.50 5×CMax 0.80
320S18
Mechanical properties of grade 320S18
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)
671 (≥) 685 (≥) 21 31 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 124
Physical properties of grade 320S18
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
581 (≥) 726 (≥) 43 41 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 342
Temp.
°C/°F		 Creep strain limit
(10000h)
(Rp1,0) N/mm2		 Creep rupture strength
(10000h)
(Rp1,0) N/mm2
339 596 426
320S18 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
320S18 UK
Specification for stainless and heat-resisting steel round wire

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