Hardening Steel 17-4PH
2026-08-16 09:02:59 Origin： Remark：0 Click：
Martensitic steel 17-4PH displays good hardness in the treated condition (44 HRC) and its resilience, the grade is used in particular in the manufacture of instruments for the medical sector, in general mechanics, in the food industry and in the automotive sector.
MATERIAL DESIGNATION
17-4PH is one of the most popular and most commonly used stainless chromium-nickel alloy steels with copper additive, precipitation hardened with martensitic structure. It is characterized by high corrosion resistance while maintaining high strength properties, including hardness and retaining relatively good parameters.
17-4PH is widely used in manufacturing the high strength, anti-corrosive forge piece for planes, gas turbine and other machined parts.
RELATED MATERIAL SPECIFICATIONS
ASTM A693, A705, A564
AMS 5604 cold rolled sheet, strip
AMS 5643 round bar, flat bar, square bar, forgings
ASTM A564 type 630
ASTM A484, ASME SA 484
ASTM A693,/ ASME SA693 plate, sheet and steel strip
DIN EN 10088-2 type 1.4542 & X5CrNiCuNb16-4
AFNOR Z6CNU1704
TYPICAL CHEMICAL COMPOSITIONS (mass weight - %)
Carbon, C (％): ≤ 0.07
Silicon, Si (％): ≤ 1.00
Manganese, Mn (％): ≤ 1.50
Phosphorus, P (％): ≤ 0.030
Sulfur, S (％): ≤ 0.015
Chromium, Cr (％): 15.0 ~ 16.0
Nickel, Ni (％): 3.00 ~ 5.00
Molybdenum, Mo (％): ≤ 0.60
Niobium, Nb (％): 0.15 ~ 0.35
Silicon, Si (％): ≤ 1.00
Manganese, Mn (％): ≤ 1.50
Phosphorus, P (％): ≤ 0.030
Sulfur, S (％): ≤ 0.015
Chromium, Cr (％): 15.0 ~ 16.0
Nickel, Ni (％): 3.00 ~ 5.00
Molybdenum, Mo (％): ≤ 0.60
Niobium, Nb (％): 0.15 ~ 0.35
Copper, Cu (%): 3.00 ~ 5.00
Iron, Fe (%): remainder.
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