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Chemical composition % of the ladle analysis of grade STSXM7

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) Cu(%)
Max 0.08 Max 1.00 Max 2.00 Max 0.045 Max O.030 17.O-19.0 8.50-1O.5 3.00-4.00
STSXM7
Mechanical properties of grade STSXM7
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)
251 (≥) 793 (≥) 42 33 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 412
Physical properties of grade STSXM7
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
531 (≥) 371 (≥) 21 43 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 114
Temp.
°C/°F		 Creep strain limit
(10000h)
(Rp1,0) N/mm2		 Creep rupture strength
(10000h)
(Rp1,0) N/mm2
162 429 313
STSXM7 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
STSXM7
Stainless steel bars
STSXM7WSA
Stainless steel wires for cold heading and cold forging
STSXM7WSB
Stainless steel wires for cold heading and cold forging

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