Precipitation hardening steel 1.4542
2026-09-01 12:54:45 Origin： Remark：0 Click：
1.4542 is widely used in the aerospace, marine, paper, energy, offshore and food industries for heavy-duty machine components, bushings, turbine blades, couplings, screws, drive shafts, nuts, measuring devices
1.4542 is a stainless hardenable martensitic Chromium - Nickel steel, stabilized with niobium. 1.4542 is a very special alloy due to its mechanical properties. The yield strength and tensile strength are both usually higher than 1000 MPa. It has good corrosion resistance and also has very high mechanical properties.
MATERIAL SPECIFICATIONS
AMS 5643, AMS 5604
ASTM A564, UNS S17400
EN 10088-2, EN 10088-3, BS EN 10088-4
TYPICAL APPLICATIONS
1.4542 is normally used in mechanical engineering, shipbuilding, in the petrochemical industry and in the petroleum industry.
1.4542 is provided in the form of round bar, sheet, flat bar and forgings.
CHEMICAL COMPOSITIONS (mass weight %)
Carbon, C (％): ≤ 0.07
Silicon, Si (％): ≤ 0.70
Manganese, Mn (％): ≤ 1.50
Phosphorus, P (％): ≤ 0.040
Sulfur, S (％): ≤ 0.030
Chromium, Cr (％): 15.0 ~ 17.0
Nickel, Ni (％): 3.00 ~ 5.00
Molybdenum, Mo (％): -
Copper, Cu (％): 3.00 ~ 5.00
Niobium, Nb (%): 5 × C％ ~ 0.45
Carbon, C (％): ≤ 0.07
Silicon, Si (％): ≤ 0.70
Manganese, Mn (％): ≤ 1.50
Phosphorus, P (％): ≤ 0.040
Sulfur, S (％): ≤ 0.030
Chromium, Cr (％): 15.0 ~ 17.0
Nickel, Ni (％): 3.00 ~ 5.00
Molybdenum, Mo (％): -
Copper, Cu (％): 3.00 ~ 5.00
Niobium, Nb (%): 5 × C％ ~ 0.45
Solution heat treatment at 1020 - 1055 ℃ with cooling in oil or air
Aging for +H900 condition at 480℃ holding for 3h, HRC 40 ~ 47
Aging for +H925 condition at 495℃ holding for 4h, HRC 38 ~ 45
Aging for +H1025 condition at 550℃ holding for 4h, HRC 34 ~ 42
Aging for +H1075 condition at 580℃ holding for 4h, HRC 31 ~ 38
Aging for +H1100 condition at 590℃ holding for 4h, HRC 30 ~ 37
Aging for +H1150 condition at 620℃ holding for 4h, HRC 28 ~ 37
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