合金名称 (Alloy Nomenclature)
性能(Performance) 1Cr13Al4 0Cr25Al5 0Cr21Al6 0Cr23Al5 0Cr21Al4 0Cr21Al6Nb 0Cr27Al7Mo2
主要化学成份(Main
Chemical
composition) Cr 12.0-15.0 23.0-26.0 19.0-22.0 20.5-23.5 18.0-21.0 21.0-23.0 26.5-27.8
Al 4.0-6.0 4.5-6.5 5.0-7.0 4.2-5.3 3.0-4.2 5.0-7.0 6.0-7.0
Re 适量opportune opportune opportune opportune opportune opportune opportune
Fe 余量
Rest Rest Rest Rest Rest Rest Rest
Nb0.5 Mo1.8-2.2
元件最高使用温度 C (Max. continuous service temp.
of element) 950 1250 1250 1250 1100 1350 1400
电阻率20 C (μΩ m) (Resistivity at 20 C)
1.25 1.42 1.42 1.35 1.23 1.45 1.53
密度 (g/cm3) (Density)
7.40 7.10 7.16 7.25 7.35 7.10 7.10
导热系数(KJ/m h C) (Thermal conductivity)
52.7 46.1 63.2 60.2 46.9 46.1 45.2
线胀系数(α×10-6/C) (Coefficient of lines expansion)
15.4 16.0 14.7 15.0 13.5 16.0 16.0
熔点约值( C) (Melting point
(approx.)) 1450 1500 1500 1500 1500 1510 1520
抗张强度(N/mm2) (Tensile strength )
580-680 630-780 630-780 630-780 600-700 650-800 680-830
延伸率(%) (Elongation at rupture) >16 >12 >12 >12 >12 >12 >10
断面收缩率(%) (Variation of area)
65-75 60-75 65-75 65-75 65-75 65-75 65-75
反复弯曲数(F/R) (Repeat Bending frequency) >5 >5 >5 >5 >5 >5 >5
硬度(H.B.) (Hardness)
200-260 200-260 200-260 200-260 200-260 200-260 200-260
持续使用时间(Hours/ C)(continuous service time) ≥80/1300 ≥80/1300 ≥80/1300 ≥80/1250 ≥50/1350 ≥50/1350
显微组织 (Micrographic structure) 铁素体Ferrite Ferrite Ferrite Ferrite Ferrite Ferrite Ferrite
磁性 (Magnetic properties) 磁性Magnetic Magnetic Magnetic Magnetic Magnetic Magnetic Magnetic