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AMS 17-4PH, 1.4542, X5CrNiCuNb16-4 Details

17-4PH, 1.4542, X5CrNiCuNb16-4 Application:Steel, Corrosion-Resistant, Investment Castings 16Cr - 4.1Ni - 0.28Cb (Nb) - 3.2Cu Homogenization, Solution, and Precipitation Heat Treated (H1100) 130 ksi (896 MPa) Tensile Strength (17-4)

Category Type Grade Microstructure Designations
Grades Stainless Steels - Special Steels 17-4PH, 1.4542, X5CrNiCuNb16-4 Precipitation-Hardening USA - AMS , SAE AMS 5342E (2006) - Steel, Corrosion-Resistant, Investment Castings 16Cr - 4.1Ni - 0.28Cb (Nb) - 3.2Cu Homogenization, Solution, and Precipitation Heat Treated (H1100) 130 ksi (896 MPa) Tensile Strength (17-4)
SAE AMS 5343E (2006) - Steel, Corrosion-Resistant, Investment Castings 16Cr - 4.1Ni - 0.28Cb (Nb) - 3.2Cu Homogenization, Solution, and Precipitation Heat Treated (H1000) 150 ksi (1034 MPa) Tensile Strength (17-4)
SAE AMS 5344F (2007) - Steel, Corrosion-Resistant, Investment Castings 16Cr - 4.1Ni - 0.28Cb - 3.2Cu Homogenization, Solution, and Precipitation Heat Treated (H900) 180 ksi (1241 MPa) Tensile Strength (17-4)
SAE AMS 5604G (2013) - Steel, Corrosion Resistant, Sheet, Strip, and Plate 16.5Cr - 4.0Ni - 4.0Cu - 0.30Cb Solution Heat Treated, Precipitation Hardenable
SAE AMS 5622F (2013) - Steel, Corrosion-Resistant, Bars, Wire, Forgings, Tubing, and Rings 16Cr - 4.0Ni - 0.30Cb - 4.0Cu Solution Heat Treated, Precipitation Hardenable Consumable Electrode Remelted
SAE AMS 5643/H1150 (2013) - Steel, Corrosion-Resistant, Bars, Wire, Forgings, Tubing and Rings 16Cr – 4.0Ni – 0.30Cb (Nb) – 4.0Cu Solution and Precipitation Heat Treated (H1150)
SAE AMS 5643S (2013) - Steel, Corrosion-Resistant, Bars, Wire, Forgings, Tubing, and Rings 16Cr - 4.0Ni - 0.30Cb - 4.0Cu Solution Heat Treated, Precipitation Hardenable
EN 10088-2 - Stainless steels. Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for general purposes

Chemical composition(wt.%) of 17-4PH, 1.4542, X5CrNiCuNb16-4 grade: SAE AMS 5342E (2006)

Elements Min.(≥) Max.(≤)
C - 0.07
Si - 1.00
Mn - 1.00
Cr 15.00 17.50
Ni 3.00 5.00
Cu 3.00 5.00
Nb 0.15 1.45

Mechanical properties of grade 17-4PH, 1.4542, X5CrNiCuNb16-4 SAE AMS 5342E (2006)

Yield Strength,Rp 0.2(MPa)

Condition Min Max Similar Note
H900 1170
H925 1070
H1025 1000
H1075 860
H1100 795
H1150 725
H1150M 520
H1150D 725

Tensile Strength,Rm(MPa)

Condition Min Max Similar Note
H900 1310
H925 1170
H1025 1070
H1075 1000
H1100 965
H1150 930
H1150M 795
H1150D 860

Impact,Kv/Ku(J)

Condition Min Max Similar Note
H925 6.8 AKV 21℃
H1025 20 AKV 21℃
H1075 27 AKV 21℃
H1100 34 AKV 21℃
H1150 41 AKV 21℃
H1150M 75 AKV 21℃
H1150D 41 AKV 21℃

Elongation,A(%)

Condition Min Max Similar Note
H900 10
H925 10
H1025 12
H1075 13
H1100 14
H1150 16
H1150M 18
H1150D 16

Reduction of area,(%)

Condition Min Max Similar Note
H900 40
H925 44
H1025 45
H1075 45
H1100 45
H1150 50
H1150M 55
H1150D 50

Hardness

Condition Type Min Max Similar Note
A HRC 38
A HB 363
H900 HRC 40
H900 HB 388
H925 HRC 38
H925 HB 375
H1025 HRC 35
H1025 HB 331
H1075 HB 311
H1075 HRC 32
H1100 HRC 31
H1100 HB 302
H1150 HRC 28
H1150 HB 277
H1150M HRC 24
H1150M HB 255
H1150D HRC 24
H1150D HB 255

Physical properties of grade 17-4PH, 1.4542, X5CrNiCuNb16-4 SAE AMS 5342E (2006)

Heat capacity, cp20℃ Note
500 J * kg-1 * K-1
Heat conductivity, λ Note
16 W * m-1 * K-1
Modulus of elasticity, E Note
200 GPa
Density Note
7.85 g/cm3
Linear Expansion Factor, α20℃ Note
10.9 * 10-6 K-1

Related properties

Heat treatment - Forging and rolling at 1150 - 900 ℃ with cooling in the air
Heat treatment - Annealing at 1020 - 1055 ℃ with cooling in oil or air
Heat treatment - Ageing for +P800 condition at 760 ℃ in the air for 2h + 620 ℃ in the air for 4h

SAE AMS 5342E (2006) Steel, Corrosion-Resistant, Investment Castings 16Cr - 4.1Ni - 0.28Cb (Nb) - 3.2Cu Homogenization, Solution, and Precipitation Heat Treated (H1100) 130 ksi (896 MPa) Tensile Strength (17-4) Used typically for parts requiring good corrosion resistance and strength up to 315°C.

Application

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.Steel can operate in the temperature range from -29 ℃ to 343 ℃, while retaining relatively good parameters. In addition, the materials in this grade are characterized by relatively good ductility and their corrosion resistance is comparable to 1.4301 / X5CrNi18-10.

17-4PH, 1.4542, X5CrNiCuNb16-4 - Form of Supply

Product type Products Dimension Processes Deliver Status
Plates / Sheets Plates / Sheets 0.08-200mm(T)*W*L Forging, hot rolling and cold rolling Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Steel Bar Round Bar, Flat Bar, Square Bar Φ8-1200mm*L Forging, hot rolling and cold rolling, Cast Black, Rough Turning, Shot Blasting,
Coil / Strip Steel Coil /Steel Strip 0.03-16.0x1200mm Cold-Rolled & Hot-Rolled Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Pipes / Tubes Seamless Pipes/Tubes, Welded Pipes/Tubes OD:6-219mm x WT:0.5-20.0mm Hot extrusion, Cold Drawn, Welded Annealed, Solution and Aging, Q+T, ACID-WASHED

Cross Reference Table(Equivalent Grade)

Grade Standard Country Application
17-4PH, 1.4542, X5CrNiCuNb16-4 AMS USA
Steel, Corrosion-Resistant, Investment Castings 16Cr - 4.1Ni - 0.28Cb (Nb) - 3.2Cu Homogenization, Solution, and Precipitation Heat Treated (H1100) 130 ksi (896 MPa) Tensile Strength (17-4)

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