Volume 01 - Properties and Selection Irons, Steels, and High-Performance Alloys Part 9 pptx

Hardenability Curves for Nickel-Chromium-Molybdenum (43xx) Alloy Steels

Figure 35. SAE/AISI 4320H UNS H43200. Heat-treating temperatures recommended by
SAE Normalize (for forged or rolled specimens only): 925 °C (1700 °F) Austenitize: 925 °C (1700
°F)

Figure 36. SAE/AISI 4340H UNS H43400. Heat-treating temperatures recommended by
SAE Normalize (for forged or rolled specimens only): 870 °C (1600 °F) Austenitize: 845 °C (1550
°F)

Figure 37. SAE/AISI E4340H UNS H43406. Heat-treating temperatures recommended by
SAE Normalize (for forged or rolled specimens only): 870 °C (1600 °F) Austenitize: 845 °C (1550
°F)





Hardenability Curves for Nickel-Molybdenum (46xx) Alloy Steels

Figure 38. SAE/AISI 4620H UNS H46200. Heat-treating temperatures recommended by
SAE Normalize (for forged or rolled specimens only): 925 °C (1700 °F) Austenitize: 925 °C (1700
°F)

Figure 39. SAE/AISI 4626H UNS H46260. Heat-treating temperatures recommended by
SAE Normalize (for forged or rolled specimens only): 925 °C (1700 °F) Austenitize: 925 °C (1700
°F)

Hardenability Curves for Nickel-Chromium-Molybdenum (47xx) Alloy Steels

Figure 40. SAE/AISI 4718H UNS H47180. Heat-treating temperatures recommended by
SAE Normalize (for forged or rolled specimens only): 925 °C (1700 °F) Austenitize: 925 °C (1700
°F)

Figure 41. SAE/AISI 4720H UNS H47200. Heat-treating temperatures recommended by
SAE Normalize (for forged or rolled specimens only): 925 °C (1700 °F) Austenitize: 925 °C (1700
°F)





Hardenability Curves for Nickel-Molybdenum (48xx) Alloy Steels

Figure 42. SAE/AISI 4815H UNS H48150. Heat-treating temperatures recommended by
SAE Normalize (for forged or rolled specimens only): 925 °C (1700 °F) Austenitize: 845 °C (1550
°F)

Figure 43. SAE/AISI 4817H UNS H48170. Heat-treating temperatures recommended by
SAE Normalize (for forged or rolled specimens only): 925 °C (1700 °F) Austenitize: 845 °C (1550
°F)

Figure 44. SAE/AISI 4820H UNS H48200. Heat-treating temperatures recommended by
SAE Normalize (for forged or rolled specimens only): 925 °C (1700 °F) Austenitize: 845 °C (1550
°F)

Hardenability Curves for Chromium (50xx) Alloy Steels

Figure 45. SAE/AISI 50B40H UNS H50401. Heat-treating temperatures recommended by
SAE Normalize (for forged or rolled specimens only): 870 °C (1600 °F) Austenitize: 845 °C (1550
°F)

Figure 46. SAE/AISI 50B44H UNS H50441. Heat-treating temperatures recommended by
SAE Normalize (for forged or rolled specimens only): 870 °C (1600 °F) Austenitize: 845 °C (1550
°F)

Figure 47. SAE/AISI 5046H UNS H50460. Heat-treating temperatures recommended by
SAE Normalize (for forged or rolled specimens only): 870 °C (1600 °F) Austenitize: 845 °C (1550
°F)

Figure 48. SAE/AISI 50B46H UNS H50461. Heat-treating temperatures recommended by
SAE Normalize (for forged or rolled specimens only): 870 °C (1600 °F) Austenitize: 845 °C (1550
°F)

Figure 49. SAE/AISI 50B50H UNS H50501. Heat-treating temperatures recommended by
SAE Normalize (for forged or rolled specimens only): 870 °C (1600 °F) Austenitize: 845 °C (1550
°F)

Figure 50. SAE/AISI 50B60H UNS H50601. Heat-treating temperatures recommended by
SAE Normalize (for forged or rolled specimens only): 870 °C (1600 °F) Austenitize: 845 °C (1550
°F)

Hardenability Curves for Chromium (51xx) Alloy Steels

Figure 51. SAE/AISI 5120H UNS H51200. Heat-treating temperatures recommended by
SAE Normalize (for forged or rolled specimens only): 925 °C (1700 °F) Austenitize: 925 °C (1700
°F)

Figure 52. SAE/AISI 5130H UNS H51300. Heat-treating temperatures recommended by
SAE Normalize (for forged or rolled specimens only): 900 °C (1650 °F) Austenitize: 870 °C (1600
°F)

Figure 53. SAE/AISI 5132H UNS H51320. Heat-treating temperatures recommended by
SAE Normalize (for forged or rolled specimens only): 870 °C (1650 °F) Austenitize: 845 °C (1600
°F)

Figure 54. SAE/AISI 5135H UNS H51350. Heat-treating temperatures recommended by
SAE Normalize (for forged or rolled specimens only): 870 °C (1650 °F) Austenitize: 845 °C (1600
°F)

Figure 55. SAE/AISI 5140H UNS H51400. Heat-treating temperatures recommended by
SAE Normalize (for forged or rolled specimens only): 870 °C (1600 °F) Austenitize: 845 °C (1550
°F)

Figure 56. SAE/AISI 5147H UNS H51470. Heat-treating temperatures recommended by
SAE Normalize (for forged or rolled specimens only): 870 °C (1600 °F) Austenitize: 845 °C (1550
°F)

Figure 57. SAE/AISI 5150H UNS H51500. Heat-treating temperatures recommended by

SAE Normalize (for forged or rolled specimens only): 870 °C (1600 °F) Austenitize: 845 °C (1550
°F)

Figure 58. SAE/AISI 5155H UNS H51550. Heat-treating temperatures recommended by
SAE Normalize (for forged or rolled specimens only): 870 °C (1600 °F) Austenitize: 845 °C (1550
°F)

Figure 59. SAE/AISI 5160H UNS H51600. Heat-treating temperatures recommended by
SAE Normalize (for forged or rolled specimens only): 870 °C (1600 °F) Austenitize: 845 °C (1550
°F)