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A-286耐腐蝕性能怎么樣?

更新時間:2021-12-18點擊次數(shù):948

A-286 技術(shù)數(shù)據(jù)


類型分析

元素

最小

最大限度

——

0.08 最大

——

2.00 最大

——

1.00 最大

13.50

16.00

24.00

27.00

1.00

1.75

——

平衡

1.90

2.30

0.10

0.50

——

0.35 最大

0.003

0.010

描述

合金 A-286 設(shè)計用于在高達(dá) 1300 °F (704 °C) 的溫度下需要高強度和良好耐腐蝕性的應(yīng)用。這種合金在缺口部分具有高延展性。事實上,合金 A-286 的缺口斷裂強度優(yōu)于許多其他具有可比高溫性能的商業(yè)合金。這種合金的一個優(yōu)點是它可以通過熱處理進(jìn)行沉淀硬化和強化。這使得在發(fā)展最大強度時高度均勻成為可能,可以在應(yīng)用后重復(fù)應(yīng)用。


應(yīng)用

合金 A-286 已用于噴氣發(fā)動機(jī)、增壓器和各種高溫應(yīng)用,如渦輪機(jī)葉輪和葉片、框架、外殼、加力部件和緊固件。


耐腐蝕性能

這種合金在高達(dá) 1300 °F (704 °C) 的溫度下對噴氣發(fā)動機(jī)服務(wù)中遇到的許多環(huán)境具有出色的耐腐蝕性。在高達(dá) 1800 °F(982 °C) 的溫度下,A-286 合金的抗氧化性與 310 型不銹鋼相當(dāng)。


身體的

密度
lb/cu in.................. 0.286
kg/cu m.................. .. 7916

熔化范圍
°F................................................ 2500/2600
°C................................ ...................... 1371/1427

彈性模量

溫度

磅/平方英寸 x 10(6)

兆帕×10(3)

度數(shù)

度數(shù)

70

21.1

28.8

199

1000

538

23.7

163

1100

593

22.8

157

1200

649

21.9

151

1300

704

21.1

145

1400

760

20.1

139

1500

816

18.7

129


比熱
Btu/lb-°F(104/1299 °F) ..................... 0.110
kJ/kg-K(40/ 704 °C)................................. 0.461

平均熱膨脹系數(shù)

溫度

系數(shù)

華氏度

10-6/°F

10-6/°C

200

93

9.17

16.5

400

204

9.35

16.8

600

316

9.47

17.0

800

427

9.64

17.4

1000

538

9.78

17.6

1200

649

9.88

17.8

1300

704

9.94

17.9

1400

760

10.32

18.6


熱導(dǎo)率
Btu-in/ft(2)-hr-°F(302 °F)......... 104.2
W/mk(150 °C)...... .................................15.0
Btu-in/ft(2)-hr-°F(112°F).. ...................... 165.0
W/mk(600 °C)...................................... ... 23.8

磁導(dǎo)率
固溶處理 .....................................1.010
固溶處理和時效...... ......................1.007


可加工性

熱加工/鍛造
合金 A-286 在 1900/2050 °F (1038/1121 °C) 的溫度下使用短的均熱期進(jìn)行軋制或鍛造。在熱加工過程中,它比奧氏體不銹鋼的抗變形能力略強。不要在低于 1700 °F (927 °C) 的溫度下鍛造。

冷加工
在固溶處理條件下,合金 A-286 可以進(jìn)行令人滿意的冷拔和成型。它比 316 和 310 型等不銹鋼更硬,并且加工硬化迅速。


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