17-4PH, 630, 05Cr17Ni4Cu4Nb, S17400, 1.4542, X5CrNiCuNb17-4-4


17-4PH, 17-4 PH, 1.4542, X5CrNiCuNb17-4-4, X5CrNiCuNb16-4, AISI 630, UNS S17400 is a good corrosion resistance and excellent strength precipitation hardened martensitic stainless steel alloy suitable for a wide variety of applications in the commercial, oil and gas, aerospace, and nuclear industries. It’s suitable for intricate parts requiring corrosion resistance and high strength that can be heat treated and welded with minimal distortion due to its precipitation hardening capabilities acc. to AMS 5643, AMS 5604, AMS 5622, ASTM A564, ASTM A705, ASME SA564, AMS STD 2154, EN 10088-1, AMS 5643/H1025 for purchase in Solution Treated and Aged to H1025, AMS 5604, ASTM A564 Type 630, ASME SA564, AMS 5825 Welding Wire, AMS 5827, AMS 7474, ASTM A693, ASME SA693, ASTM A705, ASME SA705

17-4PH, 630, 05Cr17Ni4Cu4Nb, S17400, 1.4542, X5CrNiCuNb17-4-4 - Introduction and Application

17-4PH, 630, 05Cr17Ni4Cu4Nb, S17400, 1.4542, X5CrNiCuNb17-4-4 a precipitation hardened martensitic stainless steel alloy that is melted in AOD, AOD+ESR, or AOD+VAR melt type, is one of the most popular and most commonly used stainless chromium-nickel alloy steels with copper additive, This alloy offers good corrosion resistance and excellent strength., 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.Bearing in mind that it is a precipitation hardened steel, it should be applied after supersaturation and aging. In the delivery condition +A, the products show no martensitic structure, resulting in significantly less corrosion resistance.Steel can be welded by TIG, but the welding process requires the use of an annealed material. Otherwise the material at the joints will not retain the proper structure. Furthermore, at the expense of a slight loss of corrosion resistance, the products can be nitrided to achieve a hardened topcoat.17-4PH, and X5CrNiCuNb16-4 / 1.4542 is provided, among others, in the form of round bars, sheets, flat bars and cold-rolled tapes.The material 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. Application of 17-4PH, 630, 05Cr17Ni4Cu4Nb, S17400, 1.4542, X5CrNiCuNb17-4-4

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.

Bearing in mind that it is a precipitation hardened steel, it should be applied after supersaturation and aging. In the delivery condition +A, the products show no martensitic structure, resulting in significantly less corrosion resistance.

Steel can be welded by TIG, but the welding process requires the use of an annealed material. Otherwise the material at the joints will not retain the proper structure. Furthermore, at the expense of a slight loss of corrosion resistance, the products can be nitrided to achieve a hardened topcoat.

17-4PH, and X5CrNiCuNb16-4 / 1.4542 is provided, among others, in the form of round bars, sheets, flat bars and cold-rolled tapes.

The material 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.

17-4PH, AISI 630 stainless steel grade is reinforced by separation and at the same time is one of the most popular types of stainless steel, which mainly contains chromium, nickel and copper. It contains such chemical elements as copper, carbon, manganese, sulphur, phosphorus, silicon, nickel, molybdenum, niobium, copper, nitrogen. This steel grade is characterized by high ductility, abrasion resistance and versatile use in many types of industry. In sea water, steel is susceptible to crevice corrosion.

This grade stainless steel 1.4542 on martensitic structure is used in the aerospace, energy, marine, food. In addition, the steel of the symbol is used in astronautics and the paper industry. It produced turbine blades, fittings, screws, drive shafts, a variety of nuts, bushings, components of machines, and the elements necessary for building measuring devices. Steel plants are being built. Is used in the engineering industry and petroleum. However, before it will be possible to use steel it is very important to use the process of solution treating and ageing. Interestingly, species with delivery + A martensitic structure has not by what is also less resistant to corrosion and acid environment.

Martensitic is usually provided in the form of a round steel bar, sheet metal or flat cold-rolled strips. However, before it will be available in this form, first you’ll need to is its suitable heat treatment and a variety of technological processes. The hardness of this species is less than 38 HRC or 363 HB depending on the selected option. Stainless steel has a yield of more than 1170 MPa and its tensile strength is greater than the 1310 MPa. This grade of steel chrome-nickel with copper has high corrosion resistance and very good divergency. Impressive is also the hardness of the stainless steel. The best conditions to work in temperatures from-29 ° c to 343 ° c without a change in their properties. In addition, it has a very good ductility and corrosion resistance is comparable to steel 1.4301. Steel can be welded using the appropriate method TIG, however, the State of the steel must be annealed. In another case, in places call the material might not have actually retained the structure. This grade can be nitrided, but then the resulting product has a lower immune property. Nitriding process aims to strengthen the top layer.

17-4 Steel Bars, Wire, and Forgings are usually a single-melt product offered to AMS 5643 for aerospace applications. A CEVM (Consumable Electrode Vacuum Melt) or VAR (Vacuum Arc Remelt) product is specified in AMS 5622. Both specifications require that bars and forgings be restricted to 8” Diameter or less, or 8” least distance between parallel sides. A provision is included to allow larger sizes, provided that the Buyer and Seller agree upon mechanical properties for the size in question.


Melted process

  • AOD
  • AOD+ESR
  • AOD+VAR

17-4PH, 630, 05Cr17Ni4Cu4Nb, S17400, 1.4542, X5CrNiCuNb17-4-4 - Chemical composition WT %

GradesChemical Composition WT %
CMnSiPSCrNiMoNbCuN
17-4, 17-4 PH, 17-4PH, UNS S17400, 630Max 0.07Max 1.0Max 1.0Max 0.04Max 0.0315.0 - 17.53.0 - 5.0-0.15 - 0.453.0 - 5.0-
X5CrNiCuNb16-4, X 5 CrNiCuNb 16-4, 1.4542Max 0.07Max 1.5Max 0.7Max 0.04Max 0.0315.0 - 17.03.0 - 5.0Max 0.6Max 0.453.0 - 5.0-
X5CrNiCuNb17-4-4, X 5 CrNiCuNb 17-4-4, 1.4548Max 0.07Max 1.0Max 1.0Max 0.025Max 0.02515.0 - 17.53.0 - 5.0-0.15 - 0.453.0 - 5.0-
X4CrNiCuNb16-4, X 4 CrNiCuNb 16 4, 1.4540Max 0.06Max 1.0Max 1.0--15.0 - 17.03.5 - 5.0-0.15 - 0.402.5 - 4.0Max 0.05
Z7CNU17-04, Z 7 CNU 17-04, 17-4 DP, X17U4Max 0.07Max 1.0Max 0.75Max 0.04Max 0.01515.5 - 17.54.0 - 5.0-0.15 - 0.453.0 - 5.0-
Z7CNU16-04, Z 7 CNU 16-04, 174 PHMax 0.07Max 1.0Max 0.75Max 0.035Max 0.02515.0 - 17.53.0 - 5.0Max 0.50.15 - 0.453.0 - 5.0-
05Ch16N4D2B, 05Х16Н4Д2БMax 0.07Max 1.8Max 0.8Max 0.03Max 0.0315.0 - 17.52.0 - 5.0-0.05 - 0.51.5 - 3.0-
07Ch16N4D4B-Sh, 07Х16Н4Д4Б-Ш, 07Ch14N4DB, 07Х14Н4ДБMax 0.7Max 1.0Max 1.0Max 0.045Max 0.0315.0 - 17.03.0 - 5.0Max 0.3Max 0.453.0 - 5.0-
05Cr17Ni4Cu4Nb, GB/T 8732-2014, Max 0.055Max 1.0Max 1.0Max 0.03Max 0.0215.0 - 16.03.8 - 4.5Max 0.30.15-0.353.0 - 3.7

Mechanical Property of 17-4PH, 630, 05Cr17Ni4Cu4Nb, S17400, 1.4542, X5CrNiCuNb17-4-4

  • Delivery condition +A:
    • HRC Hardness: Max 38
    • HB Hardness: Max 363
  • Delivery condition H900
    • Tensile strength, Rm: >1310 MPa
    • Yield point, RP0,2: >1170 MPa
    • Elongation, A: >10%
    • Contraction, Z: >40%
    • HB Hardness: >388
    • HRC Hardness: >40
  • Delivery condition H925
    • Tensile strength, Rm: >1170 MPa
    • Yield point, Rp0,2: >1070 MPa
    • Elongation, A: >10%
    • Przewężenie, Z: >44%
    • HB Hardness: >375
    • HRC Hardness: >38
    • Impact resistance, KV21℃: >6.8 J
  • Delivery condition H1025
    • Tensile strength, Rm: >1070 MPa
    • Yield point, Rp0,2: >1000 MPa
    • Elongation, A: >12%
    • Contraction, Z: >45%
    • HB Hardness: >331
    • HRC Hardness: >35
    • Udarność, KV21℃: >20 J
  • Delivery condition H1075
    • Tensile strength, Rm: >1000 MPa
    • Yield point, Rp0,2: >860 MPa
    • Elongation, A: >13%
    • Contraction, Z: >45%
    • HB Hardness: >311
    • HRC Hardness: >32
    • Impact resistance, KV21℃: >27 J
  • Delivery condition H1100
    • Tensile strength, Rm: >965 MPa
    • Yield point, Rp0,2: >795 MPa
    • Elongation, A: >14%
    • Contraction, Z: >45%
    • HB Hardness: >302
    • HRC Hardness: >31
    • Impact resistance, KV21℃: >34 J
  • Delivery condition H1150
    • Tensile strength, Rm: >930 MPa
    • Yield point, Rp0,2: >725 MPa
    • Elongation, A: >16%
    • Contraction, Z: >50%
    • HB Hardness: >277
    • HRC Hardness: >28
    • Impact resistance, KV21℃: >41 J
  • Delivery condition H1150M
    • Tensile strength, Rm: >795 MPa
    • Yield point, Rp0,2: >520 MPa
    • Elongation, A: >18%
    • Contraction, Z: >55%
    • HB Hardness: >255
    • HRC Hardness: >24
    • Impact resistance, KV21℃: >75 J
  • Delivery condition H1150D
    • Tensile strength, Rm: >860 MPa
    • Yield point, Rp0,2: >725 MPa
    • Elongation, A: >16%
    • Contraction, Z: >50%
    • HB Hardness: >255
    • HRC Hardness: >24
    • Impact resistance, KV21℃: >41 J

Mechanical properties for Cold-rolled tapes and Hot-rolled sheets 17-4PH, 630, 05Cr17Ni4Cu4Nb, S17400, 1.4542, X5CrNiCuNb17-4-4

  • Delivery condition of cold-rolled tapes +AT 
    • Tensile strength, Rm: Max 1275 MPa
    • Elongation, A: >5%
  • Delivery condition of cold-rolled tapes +P1300
    • Tensile strength, Rm: >1300 MPa
    • Yield point, Rp0,2: >1150 MPa
    • Elongation, A: >3%
  • Delivery condition of cold-rolled tapes +P900
    • Tensile strength, Rm: >900 MPa
    • Yield point, Rp0,2: >700 MPa
    • Elongation, A: >6%
  • Delivery condition of hot-rolled sheets +P1070
    • Tensile strength, Rm: 1070 - 1270 MPa
    • Yield point, Rp0,2: >1000 MPa
    • Elongation A: >8%
  • Delivery condition of hot-rolled sheets +P950
    • Tensile strength, Rm: 950 - 1150 MPa
    • Yield point, Rp0,2: >800 MPa
    • Elongation, A: >10%
  • Delivery condition of hot-rolled sheets +P850
    • Tensile strength, Rm: 850 - 1050 MPa
    • Yield point, Rp0,2: >600 MPa
    • Elongation, A: >12%
  • Delivery condition of hot-rolled sheets +SR630
    • Tensile strength, Rm: Max 1050 MPa

 

Mechanical properties of 17-4PH, 630, 05Cr17Ni4Cu4Nb, S17400, 1.4542, X5CrNiCuNb17-4-4

  • Delivery condition +AT
    • Tensile strength, Rm: Max 1200 MPa
    • Hardness, HB: Max 360
  • Delivery condition +P800
    • Properties at elevated temperature in delivery condition +P800 
    • 100℃ - Yield point, Rp0,2: >500 MPa
    • 150℃ - Yield point, Rp0,2: >490 MPa
    • 200℃ - Yield point, Rp0,2: >480 MPa
    • 250℃ - Yield point, Rp0,2: >470 MPa
    • 300℃ - Yield point, Rp0,2: >460 MPa
    • Tensile strength, Rm: 850 - 1100 MPa
    • Yield point, Rp0,2: >520 MPa
    • Elongation, A: >10%
    • Impact resistance, KV20℃: >75 J
  • Delivery condition +P930
    • Properties at elevated temperature in delivery condition +P930 
    • 100℃ - Yield point, Rp0,2: >680 MPa
    • 150℃ - Yield point, Rp0,2: >660 MPa
    • 200℃ - Yield point, Rp0,2: >640 MPa
    • 250℃ - Yield point, Rp0,2: >620 MPa
    • 300℃ - Yield point, Rp0,2: >600 MPa
    • Tensile strength, Rm: 930 - 1100 MPa
    • Yield point, Rp0,2: >720 MPa
    • Elongation, A: >12%
    • Impact resistance, KV20℃: >40 J
  • Delivery condition +P960
    • Properties at elevated temperature in delivery condition +P960 
    • 100℃ - Yield point, Rp0,2: >730 MPa
    • 150℃ - Yield point, Rp0,2: >710 MPa
    • 200℃ - Yield point, Rp0,2: >690 MPa
    • 250℃ - Yield point, Rp0,2: >670 MPa
    • 300℃ - Yield point, Rp0,2: >650 MPa
    • Tensile strength, Rm: 960 - 1160 MPa
    • Yield point, Rp0,2: >790 MPa
    • Elongation, A: >12%
  • Delivery condition +P1070
    • Properties at elevated temperature in delivery condition +P1070 
    • 100℃ - Yield point, Rp0,2: >880 MPa
    • 150℃ - Yield point, Rp0,2: >830 MPa
    • 200℃ - Yield point, Rp0,2: >800 MPa
    • 250℃ - Yield point, Rp0,2: >770 MPa
    • 300℃ - Yield point, Rp0,2: >750 MPa
    • Tensile strength, Rm: 1070 - 1270 MPa
    • Yield point, Rp0,2: >1000 MPa
    • Elongation, A: >10%



Physical Property of 17-4PH, 630, 05Cr17Ni4Cu4Nb, S17400, 1.4542, X5CrNiCuNb17-4-4

  • Heat capacity, c-1
  • Heat conductivity, λ: 16 W * m-1
  • Modulus of elasticity, E: 200 GPa
  • Density: 7.8 g/cm3
  • Linear Expansion Factor, α-1
Elastic Modulus
(GPa)
Mean Co-eff of Thermal Expansion (µm/m/°C)Thermal Conductivity
(W/m.K)
Specific Heat 0-100°C
(J/kg.K)
Elec Resistivity
(nΩ.m)


0-100°C0-315°C0-538°CAt 100°CAt 500°C




630775019710.811.6-18.422.7460800

Heat Treatment of 17-4PH, 630, 05Cr17Ni4Cu4Nb, S17400, 1.4542, X5CrNiCuNb17-4-4

  • Forging and rolling at 1150 - 900 ℃ with cooling in the air
  • Annealing at 1020 - 1055 ℃ with cooling in oil or air
  • Ageing for +P800 condition at 760 ℃ in the air for 2h + 620 ℃ in the air for 4h
  • Ageing for +P850 condition at 610 - 630 ℃ in the air for 4h
  • Ageing for +P900 condition at 590-610 ℃ in the air for 1h
  • Aging for +P930 condition at 620℃ in the air for 4h
  • Ageing for +P950 condition at 580 - 600℃ in the air for 1h
  • Aging for +P960 condition at 590℃ in the air for 4h
  • Aging for +P1070 condition at 550℃ in the air for 4h
  • Ageing for +P1300 condition at 470 - 490℃ in the air for 1h

Welding of 17-4PH, 630, 05Cr17Ni4Cu4Nb, S17400, 1.4542, X5CrNiCuNb17-4-4

17-4PH, 630, 05Cr17Ni4Cu4Nb, S17400, 1.4542, X5CrNiCuNb17-4-4 stainless steels can be welded using all conventional methods, and they do not require pre-heating. Care should be taken in designing and welding of high strength steels to prevent weldment stresses.


Machining of 17-4PH, 630, 05Cr17Ni4Cu4Nb, S17400, 1.4542, X5CrNiCuNb17-4-4

17-4PH, 630, 05Cr17Ni4Cu4Nb, S17400, 1.4542, X5CrNiCuNb17-4-4 stainless steels can be machined in their solution-treated condition. They have machining rates similar to that of grade 304 steels.



Equivalent grades of 17-4PH, 630, 05Cr17Ni4Cu4Nb, S17400, 1.4542, X5CrNiCuNb17-4-4

PH17-4, 17-4, 17-4PH, 17-4 H1025, 17-4 H1075, 174 H1150, 174 HH1150, 17Cr-4Ni, AISI 630, UNS S17400, DIN 1.4542, 05CR17NI4CU4NB, 1.4540, X4CRNICUNB16-4, X 4 CRNICUNB 16-4, 0CR17NI4CU4NB, 1.4542, X5CRNICUNB16-4, X 5 CRNICUNB 16-4, Z7CNU16-04, Z 7 CNU 16-04, Z 7 CNU 17-04, Z7CNU17-04, 1.4548, X5CRNICUNB17-4-4, X 5 CRNICUNB 17-4-4, 4542-174-00-I, 17-4 DP, AISI 630, SUS 630, SUS630, ASTM A693 TYPE 630, ASTM A564 TYPE S17400, ASTM A705 TYPE 630, ASTM A1082 TYPE 630 S17400, 07CH16N4D4B-SH, 07Х16Н4Д4Б-Ш, 07CH14N4DB, 07Х14Н4ДБ, 05CH16N4D2B, 05Х16Н4Д2Б, AMS 5604, AMS 5622, AMS 5643, AMS 5803, AMS 5825, 17-4 PH, PH17-4, Type 630 Stainless, SAT Type 630, 17Cr-4Ni, Custom 630, DIN 1.4542, DIN X5CrNiCuNb16-4, DIN X5CrNiCuNb17-4, AFNOR Z7CNU15-05, AFNOR Z7CNU17-04, BS X5CrNiCuNb16-4, AISI 630, AISI 630 (17-4PH), SAE 630, SAE 17-4PH, SAE 630 (17-4PH), JIS SUS630, JIS SUSF630, JIS SCS24, EN X5CrNiCuNb16-4, EN 1.4542, ISO X5CrNiCuNb16-4, ISO PP20I, ISO 4542-174-00-I, GB 05Cr17Ni4Cu4Nb, UNS S17400

17-4PH, 630, 05Cr17Ni4Cu4Nb, S17400, 1.4542, X5CrNiCuNb17-4-4 Martensitic & Precipitation hardened stainless steel stock list

Grade Shape Dimensionmm Qty.kg
17-4PH Round bar 200 0.94
17-4PH Flat bar 208.00*98.00*915 0.495
17-4PH Flat bar 208.00*98.00*915 0.495
17-4PH Flat bar 208.00*98.00*915 0.490
17-4PH Flat bar 208.00*98.00*915 0.505
17-4PH ESR Ingot 23680
17-4PH Forged flat bar 85×173×4250 1464