ASTM F468 is a specification for commercial wrought nonferrous bolts, hex cap screws, socket head cap screws and studs. It covers fasteners manufactured from various copper, nickel, aluminum and titanium alloys, including materials such as Monel 400, Monel K500, titanium and silicon bronze. ASTM F468 specifies chemical composition and mechanical requirements including tensile strength, yield strength, elongation and hardness.
ASTM F468 Fasteners at a Glance
| Property | Details |
|---|---|
| Standard | ASTM F468 |
| Material family | Nonferrous alloys |
| Fastener types | Bolts, studs, hex cap screws, socket head cap screws |
| Major alloy groups | Nickel, copper, aluminum, titanium |
| Manufacturing | Cold formed, hot formed or machined |
| Testing | Chemical, tensile, yield, elongation and hardness requirements |
| Size range | Bolts/studs generally 0.250–1.500 in. under F468 scope |
| Metric companion | ASTM F468M |
| Applicable nuts | ASTM F467 |
ASTM states that F468 covers bolts and studs from 0.250 to 1.500 inches and includes socket head cap screw configurations within specified thread-size ranges. The standard also has a metric companion, ASTM F468M.
What Are ASTM F468 Fasteners?
ASTM F468 Fasteners are commercial wrought nonferrous bolts, hex cap screws, socket head cap screws, and studs manufactured from copper, nickel, aluminum and titanium alloy systems for general-use applications. Unlike carbon and alloy steel fasteners, ASTM F468 covers nonferrous bolting materials selected for properties such as corrosion resistance, low magnetic permeability, chemical resistance and performance in demanding environments.
We manufacture and supply ASTM F468 Nonferrous Bolts and Studs in a range of materials, including nickel alloys, Monel alloys, titanium and silicon bronze. These fasteners can be supplied in different dimensions, thread configurations and finishes according to the application and applicable standards.
Table of Contents
- ➤ What Are ASTM F468 Fasteners?
- ➤ ASTM F468 Nonferrous Bolts and Studs Material Grades
- ➤ ASTM F468 Fastener Types
- ➤ ASTM F468 Specifications
- ➤ ASTM F468 Material Grades
- ➤ ASTM F468 Mechanical Properties Chart
- ➤ ASTM F468 Chemical Composition Chart
- ➤ ASTM F468 Fastener Weight Chart
- ➤ ASTM F468 Equivalent Grades Chart
- ➤ Manufacturing Process for ASTM F468 Fasteners
- ➤ Applications of ASTM F468 Nonferrous Fasteners
- ➤ Why Choose Us as an ASTM F468 Fasteners Manufacturer and Exporter?
- ➤ Order ASTM F468 Nonferrous Bolts and Studs
ASTM F468 Nonferrous Bolts and Studs Material Grades
The major advantage of this specification is the availability of several nonferrous alloy families. Material selection depends on corrosion conditions, temperature, strength requirements, weight, electrical characteristics and service environment.
➤ ASTM F468 Nickel Alloy Bolts
ASTM F468 Nickel Alloy Bolts are suitable when high corrosion resistance and reliable mechanical performance are required. Nickel-based alloys can be selected for chemical processing, marine equipment, heat-exchanger assemblies and other aggressive environments.
Depending on the specified alloy, we can supply nickel alloy bolts and studs with the required chemistry, heat treatment and mechanical properties.
➤ ASTM F468 Monel 400 Bolts
ASTM F468 Monel 400 Bolts are manufactured from nickel-copper alloy material, commonly identified as UNS N04400 / Monel 400. This alloy is valued for its resistance to seawater, many chemical environments and hydrofluoric-acid-containing service.
Monel 400 fasteners are commonly considered for marine, chemical-processing, oil and gas, pump, valve and heat-exchanger applications where ordinary steel fasteners may not provide adequate corrosion resistance.
➤ ASTM F468 Monel K500 Studs
ASTM F468 Monel K500 Studs use precipitation-hardenable nickel-copper alloy material identified as UNS N05500 / Monel K500. Compared with Monel 400, K500 can provide substantially higher strength after suitable solution treatment and aging.
These studs are suitable for applications requiring a combination of corrosion resistance and higher mechanical strength, including marine equipment, pumps, valves and specialized industrial assemblies.
➤ ASTM F468 Grade 2 Titanium Bolts
ASTM F468 Grade 2 Titanium Bolts are made from commercially pure titanium Grade 2, commonly identified as UNS R50400. Titanium is particularly attractive where low density, corrosion resistance and resistance to chloride-containing environments are important.
Titanium fasteners can be used in chemical-processing equipment, marine systems, heat exchangers and other applications where weight reduction and corrosion performance are priorities.
➤ ASTM F468 Silicon Bronze Bolts
ASTM F468 Silicon Bronze Bolts are copper-alloy fasteners used where corrosion resistance, good electrical characteristics and compatibility with certain copper-alloy components are important.
Depending on the specified alloy, silicon bronze materials can include UNS C65100 and C65500. We can supply silicon bronze fasteners according to the required ASTM F468 alloy designation and dimensional requirements.
ASTM F468 Fastener Types
We supply ASTM F468 fasteners in configurations selected according to the assembly design.
| Fastener Type | Typical Application |
|---|---|
| Hex Bolts | General mechanical assemblies |
| Heavy Hex Bolts | High-load bolted connections |
| Stud Bolts | Flanges, valves and pressure equipment |
| Threaded Studs | Industrial equipment and structural assemblies |
| Hex Cap Screws | Machinery and equipment |
| Socket Head Cap Screws | Compact mechanical assemblies |
| Low Head Socket Screws | Restricted-clearance applications |
The current ASTM specification explicitly covers bolts, hex cap screws, socket head cap screws and studs, while applicable nonferrous nuts are covered separately by ASTM F467.
ASTM F468 Specifications
| Specification | Details |
|---|---|
| Standard | ASTM F468 / ASME SB468 where applicable by purchase specification |
| Product | Nonferrous bolts, studs and screws |
| Material | Nickel, copper, aluminum and titanium alloys |
| Diameter | 0.250–1.500 in. for covered bolts/studs |
| Threads | UNC, UNF and other specified configurations |
| Manufacturing | Cold formed, hot formed or machined |
| Heat Treatment | Alloy-dependent |
| Testing | Tensile, yield, elongation and hardness |
| Inspection | Dimensional and visual inspection |
| Documentation | Mill certificates and inspection reports as specified |
ASTM F468 Material Grades
- ASTM F468 Monel 400 Bolts – UNS N04400
- ASTM F468 Monel K500 Studs – UNS N05500
- ASTM F468 Grade 2 Titanium Bolts – UNS R50400
- ASTM F468 Silicon Bronze Bolts – UNS C65100 / C65500
- ASTM F468 Alloy 625 Fasteners – UNS N06625
- ASTM F468 Alloy 59 Fasteners – UNS N06059
- ASTM F468 Hastelloy C276 Fasteners – UNS N10276
- ASTM F468 Alloy 686 Fasteners – UNS N06686
- ASTM F468 copper, brass and aluminum alloy fasteners
ASTM F468 Chemical Composition Chart
| UNS | Material / Alloy | Key Chemical Composition, wt.% |
|---|---|---|
| N04400 | Monel 400 | Ni 63.0–70.0; Cu balance; Fe ≤2.5; Mn ≤2.0; Si ≤0.5; C ≤0.3; S ≤0.024 |
| N05500 | Monel K500 | Ni 63.0–70.0; Cu balance; Al 2.30–3.15; Fe ≤2.0; Mn ≤1.5; Si ≤0.5; Ti 0.35–0.85; C ≤0.25 |
| R50400 | Titanium Grade 2 | Ti balance; Fe ≤0.30; O ≤0.25; C ≤0.10; N ≤0.05; H ≤0.0125 |
| C65100 | Silicon Bronze 651 | Cu balance; Si typically controlled as the principal alloying addition; other residual elements limited by ASTM |
| C65500 | Silicon Bronze 655 | Cu balance; Si alloying addition; other elements controlled according to ASTM requirements |
| N06625 | Alloy 625 | Ni balance; Cr 20.0–23.0; Mo 8.0–10.0; Nb 3.15–4.15; Fe ≤5.0; C ≤0.40 |
| N10276 | Alloy C276 | Ni balance; Cr 14.5–16.5; Mo 15.0–17.0; Fe 4.0–7.0; W 3.0–4.5; C ≤0.02 |
ASTM F468 Mechanical Properties Chart
| Alloy | ASTM F468 Marking | Diameter / Condition | Tensile Strength | Yield Strength Min. | Elongation Min. | Hardness |
|---|---|---|---|---|---|---|
| Monel 400 / N04400 | F468U | ¼–¾ in. | 80–130 ksi | 40 ksi | 20% | 75 HRB–25 HRC |
| Monel 400 / N04400 | F468U | ⅝–1½ in. | 70–130 ksi | 30 ksi | 20% | 60 HRB–25 HRC |
| Monel K500 / N05500 | F468W | ¼–⅝ in. | 130–180 ksi | 90 ksi | 20% | 24–37 HRC |
| Titanium Grade 2 / R50400 | F468BT | All | 50–85 ksi | 45 ksi | 20% | 160–180 HV |
| Silicon Bronze C65500 | F468L | All | 50–80 ksi | 20 ksi | 20% | 60–80 HRB |
| Silicon Bronze C65100 | F468K | ¼–¾ in. | 70–100 ksi | 55 ksi | 8% | 75–95 HRB |
| Silicon Bronze C65100 | F468K | ⅝–1½ in. | 55–90 ksi | 40 ksi | 8% | 70–95 HRB |
ASTM F468 Fastener Weight Chart
| Nominal Diameter | Monel 400 / K500 Approx. kg/m | Titanium Grade 2 Approx. kg/m | Silicon Bronze Approx. kg/m |
|---|---|---|---|
| 6 mm | 0.250 | 0.128 | 0.240 |
| 8 mm | 0.444 | 0.227 | 0.427 |
| 10 mm | 0.694 | 0.354 | 0.668 |
| 12 mm | 0.999 | 0.510 | 0.961 |
| 16 mm | 1.775 | 0.907 | 1.709 |
| 20 mm | 2.774 | 1.417 | 2.670 |
| 24 mm | 3.995 | 2.040 | 3.845 |
| 30 mm | 6.242 | 3.188 | 6.008 |
| 36 mm | 8.988 | 4.591 | 8.652 |
ASTM F468 Equivalent Grades Chart
| ASTM F468 Material | UNS Number | Common / Equivalent Identification |
|---|---|---|
| Monel 400 | N04400 | Alloy 400 / UNS N04400 |
| Monel K500 | N05500 | Alloy K500 / UNS N05500 |
| Titanium Grade 2 | R50400 | CP Titanium Grade 2 / Ti Grade 2 |
| Silicon Bronze 651 | C65100 | Silicon Bronze / CuSi alloy |
| Silicon Bronze 655 | C65500 | High-Silicon Bronze / CuSi alloy |
| Alloy 625 | N06625 | Inconel 625 / UNS N06625 |
| Alloy C276 | N10276 | Hastelloy C276 / UNS N10276 |
| Alloy 59 | N06059 | Alloy 59 / UNS N06059 |
| Alloy 686 | N06686 | Alloy 686 / UNS N06686 |
Manufacturing Process for ASTM F468 Fasteners
Applications of ASTM F468 Nonferrous Fasteners
ASTM F468 fasteners are selected for applications where a nonferrous material provides advantages over conventional steel bolting.
- Marine and shipbuilding equipment
- Chemical processing plants
- Oil and gas equipment
- Heat exchangers
- Pumps and valves
- Desalination equipment
- Power-generation equipment
- Petrochemical machinery
- Process piping assemblies
- Corrosive-service equipment
- Electrical and instrumentation assemblies
- Specialized mechanical equipment
Material selection should be based on the actual service environment, including temperature, chemicals, chloride exposure, loading and galvanic compatibility.
Why Choose Us as an ASTM F468 Fasteners Manufacturer and Exporter?
As an ASTM F468 Fasteners Manufacturer in Mumbai, we focus on supplying correctly specified nonferrous fasteners rather than simply matching a product name to a grade.
We support customers with material selection, dimensional requirements, thread specifications, inspection documentation and export packing. Each order can be reviewed according to alloy, size, quantity, application and documentation requirements.
As an ASTM F468 Alloy Screws Exporter, we can also support international requirements for nickel alloy, Monel, titanium and copper-alloy fasteners with documentation appropriate to the purchase specification.
Order ASTM F468 Nonferrous Bolts and Studs
Looking for reliable ASTM F468 Fasteners for marine, chemical, industrial or specialized applications? We supply ASTM F468 bolts, studs and screws in Monel 400, Monel K500, titanium, silicon bronze and other covered nonferrous alloy materials.
Share your alloy/grade, diameter, length, thread type, quantity, finish and inspection requirements with us. We can review the specification and offer the appropriate fastener configuration for your application.
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