Loading…
Manufacturing services
CNC milling and turning · From 1 part
Clevises, shafts, brackets, valve and pump parts and high-strength components in 17-4 PH stainless steel, machined from your file. Upload your CAD and order online, starting at a single part.
Actuator clevis
17-4 PH Stainless · 50 × 40 × 12 mm base · 10 mm lugs with Ø10 hole · CNC milled
1 pc
$150.47 USD
per part
25 pcs
$52.06 USD
per part
-65.40%100 pcs
$47.52 USD
per part
-68.42%17-4 PH stainless steel (UNS S17400, type 630, ASTM A564) is a martensitic precipitation hardening stainless steel with 17% chromium, 4% nickel and 4% copper. It is bought in Condition A (solution annealed), machined, and then aged at a low temperature to give it its strength: in H900 it exceeds 1,310 MPa (190 ksi) tensile and 40 HRC. At PREMSA we CNC mill and turn it from your file: clevises, shafts, brackets, valve and pump parts and high-strength components, starting at a single part with an instant price.
Engineering-grade properties of 17-4 PH stainless steel, including mechanical, physical, and heat treatment characteristics relevant to high-strength and precision applications. This data supports material selection for components requiring strength, toughness, and corrosion resistance.
Alloy Type
Martensitic precipitation hardening stainless steel (17Cr-4Ni-4Cu)
Primary Characteristics
High strength, good corrosion resistance, hardened by low-temperature aging, moves little when aged
Tensile Strength (Ultimate)
H900: 1,310 MPa (190 ksi) min · H1025: 1,070 MPa (155 ksi) · H1150: 930 MPa (135 ksi)
Tensile Strength (Yield)
H900: 1,170 MPa (170 ksi) min · H1025: 1,000 MPa (145 ksi) · H1150: 725 MPa (105 ksi)
Elongation at Break
H900: 10% min · H1025: 12% · H1150: 16%
Hardness
Condition A: 38 HRC max · H900: 40 HRC min · H1025: 35 HRC · H1150: 28 HRC
Density
7.80 g/cm³ (0.282 lb/in³)
Elastic Modulus
28,500 ksi (196 GPa)
Poisson’s Ratio
0.27
Thermal Conductivity
18.3 W/m·K
Coefficient of Thermal Expansion
10.8 µm/m·°C
Melting Range
1400–1440 °C (2550–2625 °F)
Machinability
Medium: machined in Condition A or already aged (H1025, H1150), with carbide tooling and rigid setups
Formability
Moderate
Weldability
Good: welded in Condition A and aged afterwards to restore its strength
Corrosion Resistance
Good: withstands outdoor exposure, fresh water and many process chemicals
Heat Treatment
Low-temperature aging (H900 at 482 °C / 900 °F, H1025, H1150); shrinks slightly and evenly
Magnetic Properties
Magnetic
Common Forms
Round bar, square bar, flat bar and plate, in Condition A
Typical Applications
Clevises and brackets, shafts, valve and pump parts, aerospace components, tooling, high-strength parts
Material Composition
Chromium 15.0–17.5%, nickel 3.0–5.0%, copper 3.0–5.0%, niobium 0.15–0.45%, carbon 0.07% max, manganese 1.00% max, silicon 1.00% max, balance iron
ASTM Standard
ASTM A564 / A693
Rating across key engineering and manufacturing criteria.
Strength
Weight
Machinability
Formability
Weldability
Corrosion Resistance
Thermal Resistance
Cost Efficiency
Upload your CAD file and get an instant price and delivery date. CNC milling and turning from one part to production.
We CNC mill and turn 17-4 PH stainless parts that have to withstand load and corrosion at the same time.
Clevises and linkages
Shafts
Brackets and bases
Valve parts
Pump parts
Aerospace components
Bolts and pins
Tooling parts
Custom high-strength parts
What people ask most about 17-4 PH stainless steel parts: what it is, what it is used for, composition, hardness, H900 and H1150 conditions, equivalents, density, magnetism, rust, price and tolerances.
17-4 PH stainless steel is chosen for parts that have to withstand high loads and corrosion at the same time: clevises, shafts, brackets, valve and pump parts and aerospace components. It is bought in Condition A, machined, and aged to the strength on the drawing.
At PREMSA Industries we machine 17-4 PH with CNC milling and turning from your file, from a prototype to production.
17-4 PH is chosen when the part needs high strength and still has to be stainless.
If your drawing doesn’t specify tolerances, we machine to ISO 2768-m (medium). On dimensions you call out —holes, fits and datum surfaces— we can hold ±0.025 mm (±0.001 in), and critical dimensions are checked in inspection. When aged, 17-4 PH shrinks slightly and evenly (about 0.05% in H900): on tight dimensions that is compensated when machining, or the part is machined already aged.
17-4 PH is machined with CNC milling, CNC turning, drilling and tapping, in Condition A or already aged.
After machining, the part is aged to the condition on the drawing: H900 at 482 °C (900 °F) for maximum strength, H1025 at 552 °C (1,025 °F) and H1150 at 621 °C (1,150 °F) for more toughness. We machine the part and, if you ask, send it out for aging.
17-4 PH welds well.
For its strength and because it is stainless, 17-4 PH is used in many parts made with CNC machining.
17-4 PH is usually the right choice when the part has to withstand high loads and can’t rust.