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Published: 01 November 2007
Fig. 5.48 Elongation to fracture as a function of rupture life of HK-40 and HK-30 comparing the as-cast specimens tested in air and the precarburized (thoroughly carburized) specimens tested in H 2 -1%CH 4 ( a c = 0.8) (to avoid decarburization) after creep-rupture testing at 1000 °C (1832 More
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Published: 01 November 2007
Fig. 5.49 Elongation to fracture as a function of rupture life of HK-40 and HK-30 comparing the data from tests in the carburizing environment (i.e., H 2 -1%CH 4 [ a c = 0.8]) and that from air tests at 1000 °C (1832 °F). Source: Ref 63 More
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Published: 01 November 2007
Fig. 5.51 1% creep strengths of HK-40 and HK-30 tested at 1000 °C (1832 °F) in air, H 2 -1%CH 4 ( a c = 0.8), and for precarburized specimens tested in H 2 -1%CH 4 . Source: Ref 63 More
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Published: 01 November 2007
Fig. 3.55 Cyclic oxidation resistance of ODS alloy MA956 compared with alloy 601, HK alloy, alloy 800, and Type 310. Source: Ref 76 More
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Published: 01 November 2007
Fig. 5.14 Carburization resistance of HK (25Cr-20Ni) and several HP alloys (Cr/Ni) as a function of temperature in pack carburization tests. Source: Ref 32 More
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Published: 01 November 2007
Fig. 5.15 Carbon concentration profiles for HK (25Cr-20Ni) and several HP alloys (Cr/Ni) carburized at 1100 °C (2010 °F) for 520 h in pack carburization tests. Source: Ref 32 More
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Published: 01 November 2007
Fig. 5.16 Carbon concentration profiles of HK and HP alloys tested at 1050 °C (1920 °F) for 1200 h in 37%N 2 -40%H 2 -20%CO-3% CH 4 ( a c = 1.0, p O 2 = 3.4 × 10 –20 atm). Source: Ref 33 More
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Published: 01 November 2007
Fig. 5.32 Effect of silicon on the carburization resistance of HK-40 with different silicon levels tested at 1100 °C (2010 °F) for 520 h in carbon granulate (pack carburization test). Source: Ref 47 More
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Published: 01 November 2007
Fig. 5.38 Effect of machining on the carburization resistance of cast HK-40 alloy. Source: Ref 56 More
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Published: 01 November 2007
Fig. 5.43 Carbon concentration profiles for HK-40 alloy after testing at 1000 °C (1830 °F) for 100 h in a carburizing environment ( a c = 0.8, p O 2 is shown in Fig. 5.18 ) with and without injection of 100 ppm H 2 S. The specimen was a flat coupon with both sides being exposed More
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Published: 01 November 2007
Fig. 5.44 Effect of H 2 S on the carburization behavior of HK-40 alloy. Source: Ref 35 More
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Published: 01 November 2007
Fig. 5.50 Comparative creep curves of HK-40 tested at 1000 °C (1832 °F) and 15 MPa in air and H 2 -1% CH 4 ( a c = 0.8). Source: Ref 63 More
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Published: 01 December 1995
Fig. 2-92 U-bend castings of high alloy HK cast steel More
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Published: 01 December 1995
Fig. 6-32 Bar graph showing limiting creep stresses for the HK and HN cast alloys ( 40 ) More
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Published: 01 December 1995
Fig. 6-33 Stress versus minimum-creep-rate curves for HK-35 alloy at 1600 to 2000 °F (871 to 1093 °C) ( 42 ) More
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Published: 01 December 1995
Fig. 6-35 Creep-rupture properties of Type HK-40 alloy. The scatter bands shown are set arbitrarily at ±20% of the stress for the central tendency line. Such a range usually embraces test data for similar alloy compositions, but should not be considered statistically significant confidence More
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Published: 01 December 1995
Fig. 27-5 Variation of Poisson’s ratio with temperature for equiaxed HK-40 material ( 10 ) More
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Published: 01 December 1995
Fig. 27-15 Variation of specified heat with temperature of the HK-40 alloy ( 5 ) More
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Published: 01 October 2011
Fig. 9.40 Spectrum of hardness obtainable with selected diffusion processes of steel. HK, Knoop hardness scale More
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Published: 01 December 1995
Fig. 6-34 Temperature dependence of elevated-temperature strength properties of cast heat-resistant high alloy grade HK-40 ( 43 ) More