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Inconel 625 Round Bar (ASTM B446), ¾-8" Diameter, Marine Engineering; matches

China Inconel 625 Round Bar (ASTM B446), ¾-8" Diameter, Marine Engineering; matches

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Inconel 625 Round Bar (ASTM B446), ¾-8" Diameter, Marine Engineering; matches

MOQ： 10 kgs
Price： 20 - 35 USD/Kg
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Payment Terms	L/C, T/T, Western Union
Supply Ability	3 Ton per week
Delivery Time	5 - 12 days based on the quantity
Packaging Details	standard packing for export
Products	Inconel 625 round bar
Grade	inconel 625
Diameter	10 - 350mm
Length	custom cutting any length as request
Standard	ASTM EN
Service	Cutting
Loading Port	Shanghai Port
Surface	black, bright
Brand Name	DELTA
Model Number	inconel 625
Certification	ISO
Place of Origin	China

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Product Specification


Payment Terms	L/C, T/T, Western Union	Supply Ability	3 Ton per week
Delivery Time	5 - 12 days based on the quantity	Packaging Details	standard packing for export
Products	Inconel 625 round bar	Grade	inconel 625
Diameter	10 - 350mm	Length	custom cutting any length as request
Standard	ASTM EN	Service	Cutting
Loading Port	Shanghai Port	Surface	black, bright
Brand Name	DELTA	Model Number	inconel 625
Certification	ISO	Place of Origin	China
High Light	Inconel 625 round bar ASTM B446 ，Nickel alloy marine engineering bar ，Alloy 625 round bar ¾-8 diameter

Inconel 625 Round Bar (ASTM B446), ¾-8" Diameter, Marine Engineering; matches Alloy 625

Products Specification

Standard	AISI, ASTM, BS, DIN, GB, JIS
Grade	Monel series: 400 K500 Inconel series: 600 601 625 718 725 Incoloy series: 800 800H 825 925 Hastelloy series: B,B2,B3,C,C-276,C-4,C-22 Pure: Ni200, Ni201
Specifications	Round bar	Diameter:4~300mm
	Flat bar	Thickness	1.0~100mm
		Width	1~1500mm
	Square bar	Size: 44-100100mm
Length	2m, 5.8m, 6m, or as required.
Surface	Black, peeled, polishing, bright, sand blast, hair line, etc.
Price Term	Ex-work, FOB, CFR, CIF, etc.
Delivery Time	Standard size is in stock,prompt delivery or as order's quantity.

Inconel 625 Round Bar (ASTM B446), ¾-8" Diameter, Marine Engineering; matches Alloy 625

Overview

Engineered to meet the uncompromising demands of marine and offshore environments, our Inconel 625 Round Bar adheres strictly to ASTM B446 standards and offers full compatibility with Alloy 625. Available in diameters ranging from ¾" to 8"—the most requested sizes for marine engineering—this nickel-chromium-molybdenum alloy delivers exceptional corrosion resistance, high-temperature stability, and structural strength without requiring post-fabrication heat treatment. Whether deployed in subsea risers, offshore platforms, or shipboard systems, it provides long-term reliability in the harshest saltwater and industrial environments.

Key Specifications & Compliance

Standard: ASTM B446 / ASME SB446; UNS N06625 ( Werkstoff Nr. 2.4856 )

Dimensions: Diameters ¾"–8", lengths up to 20' (custom lengths available); tolerances per ASTM A484/A484M

Finish: Bright polished, black oxide, or mill finish (suitable for welding and machining)

Compliance: NACE MR 0175/ISO 15156 (for sour service), RoHS, and REACH compliant

Chemical Composition (ASTM B446)

The alloy’s performance stems from its precisely balanced chemistry, which includes:

Element	Content Range (%)	Role
Nickel (Ni)	58.0 min	Core structural stability
Chromium (Cr)	20.0–23.0	Oxidation and corrosion resistance
Molybdenum (Mo)	8.0–10.0	Pitting/crevice corrosion defense
Niobium + Tantalum (Nb+Ta)	3.15–4.15	Solid-solution strengthening
Iron (Fe)	5.0 max	Ductility enhancement
Carbon (C)	0.10 max	Avoids carbide precipitation
Sulfur (S)	0.015 max	Minimizes embrittlement

This composition ensures the round bar matches Alloy 625’s performance while exceeding basic marine material requirements .

Mechanical Properties

Our Inconel 625 Round Bar delivers consistent strength across temperature ranges, critical for dynamic marine applications:

Density: 8.44 g/cm³ (0.305 lbs/in³)

Tensile Strength: 930 MPa (135,000 psi) minimum

Yield Strength (0.2% offset): 517 MPa (75,000 psi) minimum

Elongation: 42.5% minimum (annealed condition)

Temperature Resistance: Maintains strength up to 982°C (1,800°F)

Cold-worked variants (20–75% cold reduction) boost tensile strength to 2,144 MPa (311 ksi) for high-stress components like subsea clamps .

Why It’s Ideal for Marine Engineering

Marine environments subject materials to chloride corrosion, thermal cycling, and high pressure—challenges this round bar solves:

1. Unmatched Corrosion Resistance

The alloy’s chromium-molybdenum-niobium blend resists pitting, crevice corrosion, and stress corrosion cracking (SCC) in seawater, splash zones, and tidal areas . It outperforms standard steels in sour gas and acidic brine, extending equipment life by 3–5x .

2. Weldability & Fabrication

No post-weld heat treatment is needed, a critical advantage for on-site repairs of offshore platforms or ship hulls . Its low carbon content prevents sensitization in heat-affected zones (HAZs), ensuring weld joints retain corrosion resistance .

3. Versatile Marine Applications

Common uses include:

Subsea: Flexible risers, manifold piping, Christmas tree (XMT) components

Topside: Flare stacks, seawater lift pipes, high-pressure separators

Shipbuilding: Valve trim, heat exchangers, propeller shafts

How It Matches Alloy 625

While minor elemental variations exist (e.g., slightly higher niobium in Inconel 625), our round bar achieves identical performance metrics:

Same corrosion resistance in seawater and chemicals

Equivalent high-temperature strength (up to 1,500°C/2,730°F)

Interchangeable in all Alloy 625-specified designs

Quality Assurance

Each round bar undergoes:

Chemical analysis via X-ray fluorescence (XRF)

Mechanical testing (tensile, hardness)

Ultrasonic inspection (UT) for internal defects

Surface quality checks per ASTM B446

Certificates of Compliance (CoC) and mill test reports (MTRs) are provided with every order.

Ordering Information

We offer:

Stock diameters: ¾", 1", 1.5", 2", 3", 4", 6", 8"

Custom cuts (1'–20' lengths)

Value-added services: Threading, grooving, heat treatment

Fast lead times (2–5 days for stock; 2–3 weeks for custom)

Company Details

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Business Type:

Manufacturer,Distributor/Wholesaler,Exporter 
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Total Annual:

>1000000
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Employee Number:

>100 
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Ecer Certification：

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Our company is located in Wuxi City, China, we are a stainless steel plate, seamless steel pipe, round steel, steel belt, decorative pipe and other products distribution wholesale private enterprise. Our company operates stainless steel plate, seamless steel pipe, round steel, steel belt, decorative... Our company is located in Wuxi City, China, we are a stainless steel plate, seamless steel pipe, round steel, steel belt, decorative pipe and other products distribution wholesale private enterprise. Our company operates stainless steel plate, seamless steel pipe, round steel, steel belt, decorative...

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No.283-1, Youyi Middle Road, Xishan District, Wuxi City, Jiangsu Province
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