C22.8
2018-01-08 16:49:37
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Steel Grade: C22.8| Material No.: 1.0460
CHEMICAL COMPOSITION(C22.8):
C(％) : 0.18～0.23
Si(％) : ≤0.40
Mn(％) : 0.30～0.90
P(％) : 0.025
S(％) : 0.015
Cr(％) : —
Mo(％) : —
Ni(％) : —
Other(％) : Cu≤0.30①；Al≤0.020；Nb≤0.01；Ti≤0.03；V≤0.02
HARDNESS AND HEAT TREATMENT MECHANICAL PROPERTIES (C22.8):
Hot Working℃: 1100～850
Annealing/Normalizing℃: 890～950③
Quench℃: —
Temper℃: —
Brinel Hardness HBS: 120～160
MECHANICAL PROPERTIES(C22.8) Tensile Strength|σb≥Mpa: 410～540
Normal Temp Yield Strength|σs≥Mpa: 240
Extensibility|δ5≥(%): 25
Ballistic|αkv≥J⑥: 44
Yield Strength|σ0.2≥/MPa|450℃: 100
Creep Limit/Mpa|10000h|450℃: —
Creep Rupture/Mpa|1000h|500℃: —
Creep Rupture/Mpa|10000h|450℃: 113
Remark(C22.8):
①, The balance of Cr+Ni+Mo+Cu is under 0.70％.
②, The balance of Cr+Ni+Mo is under 0.63％.
③, Normalizing.
④, Stress relieving annealing.
⑤, φ≤100mm.
⑥, The test sample is according to DVM-V.
Introduction High-temperature structural steel (C22.8)
The improvement in mechanical properties is due to the addition of Mo and V. These elements stabilize the microstructure of the steel. V offers more improvement than Mo but is more expensive. Maximum use temperature is 400-500 degrees Celcius. Mechanical properties depend both on the temperature and the loading time. Special steels are developed for even higher temperatures (up to 1220 degrees C). the mechanical properties increase with increasing Carbon concentration (Reference DIN 1.7335). Alloyed steels for temperatures up to 500°C.
In addition to high creep strength, other material properties like hardenability, corrosion resistance, and weldability are also important. The relative importance of these properties depends on the specific application. For example, large turbine rotors require steels with good hardenability, whereas power plant tubing and piping must have good weldability. Even so, the alloys used in these different applications employ the same mechanisms to improve creep strength.
HOT SALE:
SA-675GR70, SA-387GR91, X6NiCrTiMoVB25-15-2, 17-4PH, 15-5PH,
ASTM 630, X3CrNiMo13-4, UNS41500, X10CrNiTi18-10, S17400,
X5CrNiCuNbl6-4, 316Ti, 301A, 303, 304L, 310S, 316L, 317L, 321,
NKA80, DIN 1.4731, DIN 1.4021, DIN 1.4016, DIN 1.4571, DIN 1.4418,
616, 440B, 440C, 431, 430FR, 430F, 430, 422, 416, 410, 405,
ASTM D2, X155CrMoV12-1, ASTM D3, AISI H11, AISI H13, C22.8
Steel Grade: C22.8| Material No.: 1.0460
CHEMICAL COMPOSITION(C22.8):
C(％) : 0.18～0.23
Si(％) : ≤0.40
Mn(％) : 0.30～0.90
P(％) : 0.025
S(％) : 0.015
Cr(％) : —
Mo(％) : —
Ni(％) : —
Other(％) : Cu≤0.30①；Al≤0.020；Nb≤0.01；Ti≤0.03；V≤0.02
HARDNESS AND HEAT TREATMENT MECHANICAL PROPERTIES (C22.8):
Hot Working℃: 1100～850
Annealing/Normalizing℃: 890～950③
Quench℃: —
Temper℃: —
Brinel Hardness HBS: 120～160
MECHANICAL PROPERTIES(C22.8) Tensile Strength|σb≥Mpa: 410～540
Normal Temp Yield Strength|σs≥Mpa: 240
Extensibility|δ5≥(%): 25
Ballistic|αkv≥J⑥: 44
Yield Strength|σ0.2≥/MPa|450℃: 100
Creep Limit/Mpa|10000h|450℃: —
Creep Rupture/Mpa|1000h|500℃: —
Creep Rupture/Mpa|10000h|450℃: 113
Remark(C22.8):
①, The balance of Cr+Ni+Mo+Cu is under 0.70％.
②, The balance of Cr+Ni+Mo is under 0.63％.
③, Normalizing.
④, Stress relieving annealing.
⑤, φ≤100mm.
⑥, The test sample is according to DVM-V.
Introduction High-temperature structural steel (C22.8)
The improvement in mechanical properties is due to the addition of Mo and V. These elements stabilize the microstructure of the steel. V offers more improvement than Mo but is more expensive. Maximum use temperature is 400-500 degrees Celcius. Mechanical properties depend both on the temperature and the loading time. Special steels are developed for even higher temperatures (up to 1220 degrees C). the mechanical properties increase with increasing Carbon concentration (Reference DIN 1.7335). Alloyed steels for temperatures up to 500°C.
In addition to high creep strength, other material properties like hardenability, corrosion resistance, and weldability are also important. The relative importance of these properties depends on the specific application. For example, large turbine rotors require steels with good hardenability, whereas power plant tubing and piping must have good weldability. Even so, the alloys used in these different applications employ the same mechanisms to improve creep strength.
HOT SALE:
SA-675GR70, SA-387GR91, X6NiCrTiMoVB25-15-2, 17-4PH, 15-5PH,
ASTM 630, X3CrNiMo13-4, UNS41500, X10CrNiTi18-10, S17400,
X5CrNiCuNbl6-4, 316Ti, 301A, 303, 304L, 310S, 316L, 317L, 321,
NKA80, DIN 1.4731, DIN 1.4021, DIN 1.4016, DIN 1.4571, DIN 1.4418,
616, 440B, 440C, 431, 430FR, 430F, 430, 422, 416, 410, 405,
ASTM D2, X155CrMoV12-1, ASTM D3, AISI H11, AISI H13, C22.8
