F91

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We are professional F91,ASTM A182-F91 Grade F91 ASTM A182 Gr F91 F 91 Grade 91 Forged forging Steel Round Bars Rods Square rectangular rectangle Flat Hex Bars,F91,ASTM A182-F91 Forged Forging Steel Hollow Bars Forged Forging Sleeves Bushes Bushing Pipes Piping tubes tubings barrels Casing Cases Shells cylinders hubs housings,F91,ASTM A182-F91 Forged Forging Steel Rings Seamless Rolled Steel Rings,F91,ASTM A182-F91 Forged Forging Steel Flanges Blocks Discs Disks Plates,F91,ASTM A182-F91 forged forging steel valve components,Valve Seats,valve stems,valve body bodies,valve bonnets,valve seat rings,F91,ASTM A182-F91 forgd forging steel Forged Forging Steel Eccentric Equal Lateral Tees T-piece Y-Pieces Fitting Wye Pieces Piggable Wyes and other F91,ASTM A182-F91 forged forging forge Steel parts forged forging pieces forged forging steel components material products from china

Chemical Composition

  C Si Mn P S AL Cr Cu Mo N Nb Ni V
F91 Min % 0,08   0,30       8,0   0,85 0,030 0,060   0,18
Max % 0,12 0,50 0,60 0,020 0,005 0,040 9,50 0,30 1,05 0,070 0,100 0,30 0,25
(Key to steel 2010)

Physical properties

Property Value
Density: kg/dm3 7,76
Hardness: (HB) ---
magnetizable yes
E-Modul (Mpa) 218000
Temperature T
°C/F
(°C/F)
Specific heat
J / kgK
(Btu / lb °F)
Thermal conductivity
W/mK
(Btu·in / ft2·h·°F)
Electric resistance
µΩ · cm
(Ω circ mill / ft)
Modulus of elasticity 
kN/mm2
(103 ksi)
Expansion rate from 70°F bis T
10-6 / K
(10-6 / °F)
20 / 68 460 (--) 26 (--)   218 (--)  
200 / 392       207 (--) 11,3 (--)
400 / 752       190 (--) 12,0 (--)
500 / 932   30 (--)     12,3 (--)
600 / 1112         12,6 (--)
650 / 1202       162 (--) 12,7 (--)
Temp. Creep strain limit Creep strain limit Creep rupture strength Creep rupture strength Creep rupture strength
  Rp0,2   10 000h 100 000h  
°C N/mm2 / ksi   N/mm2 /ksi N/mm2 /ksi  
20 /68 450 / 65        
100 /212 410 / 59,4        
300 /572 360 / 52,2        
500 / 932 300 / 43,5   289 / 41,9 258 / 37,4  
550 /1022 270 / 39,1   199 / 28,8 166 / 24,0  
600 /1112 215 / 31,1   122 / 17,6 94 / 13,6  
650 /1202     70 / 10,1 49 / 7,1  
ksi value calculated
Temperature 0,2% Yield strength 
in high temperatures
°C / °F Rp0,2
  Mpa / ksi
100 /212 410 / 59,4
200 /392 380 / 55,1
300 / 572 360 / 52,2
400 / 752 340 / 49,3
500 /932 300 / 43,5
600 /1112 215 / 31,1

Mechanical properties (20°C / 68°F)

0,2% Yield strength Rp0,2 (N/mm2) >=450 normalised and tempered
Yield strength Mpa/ksi 415 /60 F91
Tensile strength Rm(N/mm2) 620-850 normalised and tempered
Elongation-A5 (%)min.längs >=20 normalised and tempered
impact strength (J) (transverse) 40 normalised and tempered
Tensile strength Rm N/mm2 7ksi 585 / 85 F91




F91