China 13CrMo44 Alloy Steel Plate/Sheet

China 13CrMo44 Alloy Steel Plate/Sheet

Chemical Composition (in weight %

C Si Mn Cr Mo Ni V W Others
0.14 max. 0.40 0.55 0.98 0.60 max. Cu = 0.30

 

Applications
High-temperature structural steel: Collectors, water boiler and super heater tubes (530oC).
Physical properties (average values) at ambient temperature
Modulus of elasticity [103 x N/mm2]: 210
Density [g/cm3]: 7.85
Soft Annealing
Heat to 680-720oC, cool slowly in furnace.
Hardening
Harden from a temperature of 910-940oC followed by oil or air quenching.
Tempering
Tempering temperature: 650-720oC.

 

Mechanical Properties in Hardened and Tempered Condition

Diameter in mm 0.2 % proof stress (N/mm2) Tensile strength (N/mm2) Elongation (%) Impact strength (J)
up to 60 295 440-590 20 44
61-90 285 440-590 20 44
91-150 275 440-590 20 44

 

0.2 % Proof Stress (N/mm2) vs. Temperature

100oC 150oC 200oC 250oC 300oC 350oC 400oC 450oC 500oC
260 245 240 230 215 200 190 180 175
250 240 230 220 205 190 180 170 165
250 235 220 210 195 180 170 160 155

 

1 % Creep Limit (N/mm2) vs. Temperature (oC)

Hours 450oC 460oC 480oC 500oC 520oC 540oC 560oC
10 000 245 228 193 157 122 90 64
100 000 191 172 133 98 70 46 30

 

Creep Rapture Strength (N/mm2) vs. Temperature (oC)

Hours 450oC 460oC 480oC 500oC 520oC 540oC 560oC
10 000 370 348 304 239 179 129 91
100 000 285 251 190 137 94 61 40
200 000 260 226 167 115 76 50 32

 

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