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B.S. 381S34 Details

Specification for wrought steels for mechanical and allied engineering purposes. Valve steels

B.S. 381S34 Standard Download

381S34 Datasheet
B.S. 381S34

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381S34 Application:Specification for wrought steels for mechanical and allied engineering purposes. Valve steels
Category Type Grade Designations
Grades Stainless Steels 381S34 UK - B.S. , BS 970-4 - Specification for wrought steels for mechanical and allied engineering purposes. Valve steels
Chemical composition(mass fraction)(wt.%)
Elements Min.（≥） Max.（≤） Similar Remarks
C 0.15 0.25
Si 0.75 1.25
Mn - 1.50
P - 0.040
S - 0.030
Cr 20.00 22.00
Ni 10.50 12.50
Mo - -
N 0.15 0.30
Mechanical properties of grade 381S34
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)
487 (≥) 975 (≥) 13 14 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 333
Physical properties of grade 381S34
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
421 (≥) 824 (≥) 42 33 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 431
Temp.
°C/°F		 Creep strain limit
(10000h)
(Rp1,0) N/mm2		 Creep rupture strength
(10000h)
(Rp1,0) N/mm2
669 313 444
381S34 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
381S34 B.S. UK
Specification for wrought steels for mechanical and allied engineering purposes. Valve steels