01
ASTM B443 / B443M
Nickel-chromium-molybdenum-columbium alloy plate, sheet and strip
Standard specification for nickel-chromium-molybdenum-columbium alloy plate, sheet and strip for general corrosion-resistant and high-temperature service.
Nickel Alloy — Industrial Product
Inconel 625 Sheets & Plates
Inconel 625 nickel alloy sheets and plates supplied to ASTM B443 / ASME SB443 for chemical processing, marine, offshore and high-temperature service.
Indicative priceUSD 30,000 - 45,000 / MT (volume, thickness and condition dependent)
Lead time30 - 60 working days
01
Overview
Inconel 625 Sheets & Plates combine a nickel-chromium matrix with molybdenum and niobium additions to deliver exceptional resistance to pitting, crevice and stress-corrosion cracking across a wide range of corrosive media. The alloy retains useful strength from cryogenic temperatures up to approximately 1000 °C and is supplied in the annealed condition for general chemical, marine and offshore service. Plates and sheets are supplied per ASTM B443 / ASME SB443 with mill test certification per EN 10204 3.1. The combination of corrosion resistance, weldability and thermal stability makes the plate suited to chemical process equipment shells and internals, marine and offshore structural components, heat exchanger baffles and tubesheets, ducting and stack liners, and fabricated assemblies in corrosive or chloride-containing service.
Key Characteristics
- 01 Corrosion Resistance Provides improved resistance to corrosive industrial environments.
- 02 Chloride Resistance Resistance to chloride-induced pitting and crevice corrosion in marine and saline environments.
- 03 Stress Corrosion Resistance Offers improved resistance to stress corrosion cracking under suitable service conditions.
- 04 High Temperature Capability Suitable for elevated-temperature service within the applicable material limits.
- 05 Cryogenic Toughness Retains ductility and impact strength at sub-zero temperatures down to approximately -196 °C.
- 06 Oxidation Resistance Provides resistance to oxidation and scaling at elevated temperatures.
- 07 Good Weldability Supports welding using suitable procedures and compatible filler materials.
- 08 Good Formability Supports bending, forming and other fabrication processes with suitable processing conditions.
- 09 Dimensional Stability Provides stable dimensions during processing and service under suitable conditions.
- 10 Standard Compliance Manufactured and supplied in accordance with the specified material and product standards.
- 11 Third-Party Inspection Third-party inspection can be arranged according to project and procurement requirements.
- 12 Traceable Documentation Supplied with documentation supporting material identification, chemical and mechanical traceability.
Typical Applications
- Chemical Processing Process piping, transfer systems and equipment for corrosive and high-purity media.
- Marine Engineering Piping, structural components and equipment exposed to chloride-containing marine environments.
- Oil & Gas Service Process piping, flow lines and utility systems across onshore and offshore upstream, midstream and downstream operations.
- Heat Exchangers Shell-and-tube, plate and finned heat exchangers for HVAC, process and refrigeration applications.
- Aerospace Components Aircraft structural and non-structural components where strength-to-weight ratio and material traceability are important.
- Power Generation Piping, tubing and structural components for conventional and combined-cycle power stations.
- Pressure Vessels Shell, head and nozzle components for pressure vessels designed to ASME, EN or equivalent codes.
- Welding & Fabrication Metal structures, assemblies and fabricated components for welded construction.
02
Specifications
Numbers in this section correspond to the applicable product standard, formatted for direct use in enquiry and approval documents.
Product specification
- Material
- Nickel-chromium-molybdenum-niobium alloy
- Grade
- Inconel 625 / NiCr22Mo9Nb / 2.4856
- UNS_designation
- N06625
- Product_form
- Sheet / plate
- Manufacturing_method
- Hot rolled plate; cold rolled sheet
- Condition
- Solution annealed
- Surface
- Mill finish; annealed & pickled, brushed or polished on request
- Cross_section
- Flat rectangular section, uniform thickness
- Edge_condition
- Mill edge; slit edge or cut edge on request
Supply specifications
- Thickness
- 0.5 - 75 mm (sheet and plate ranges per ASTM B443)
- Width
- 1,000 - 2,500 mm standard; wider sizes on request
- Length
- 2,000 - 6,000 mm standard; cut-to-length on request
- Tolerance
- Per ASTM B443 / ASME SB443 as applicable
- Flatness
- Per applicable standard; stretcher-leveled flatness on request
- Surface_finish
- Mill finish; annealed & pickled, brushed or polished on request
- Edge_condition
- Mill edge; slit edge or cut edge on request
- Marking
- Standard mill marking including grade, size, heat number and standard; customer marking on request
Final supply is confirmed against the project drawing, purchase agreement and the mill test certificate.
Chemical composition
ElementRequirement
Ni >= 58.0 %
Cr 20.0 - 23.0 %
Mo 8.0 - 10.0 %
Nb + Ta 3.15 - 4.15 %
Fe <= 5.0 %
Mn <= 0.50 %
Si <= 0.50 %
C <= 0.10 %
Al <= 0.40 %
Ti <= 0.40 %
Co <= 1.0 %
P <= 0.015 %
S <= 0.015 %
Reference: Per ASTM B443 for Inconel 625 (UNS N06625).
Mechanical properties
PropertyRequirement
Tensile strength (Rm, annealed) >= 827 MPa
Yield strength (Rp0.2, annealed) >= 414 MPa
Elongation in 50 mm (annealed) >= 30 %
Hardness_annealed <= 287 HB / ~100 HRB
Tensile strength (Rm) at 650 °C ~700 MPa (typical)
Yield strength (Rp0.2) at 650 °C ~480 MPa (typical)
Shear strength (annealed) ~470 MPa (typical)
Impact toughness (annealed, -196 °C) >= 120 J (typical)
Reference: Annealed condition values per ASTM B443 at room temperature; elevated-temperature values are typical and provided for design reference only.
Physical properties
PropertyTypical Value
Density 8.44 g/cm³
Melting range 1290 - 1350 °C
Elastic modulus 207 GPa at 20 °C
Shear modulus 82 GPa at 20 °C
Poisson's ratio 0.278
Thermal conductivity 12.1 W/m·K at 20 °C
Specific heat 410 J/kg·K at 20 °C
Electrical resistivity 1.29 µΩ·m at 20 °C
Thermal expansion (20 - 100 °C) 12.8 x 10⁻⁶ /°C
Curie temperature Non-magnetic (essentially)
Reference: Typical material values for Inconel 625 nickel alloy in the annealed condition.
Reference framework
Standards & documentation
The applicable product, dimensional and inspection standards should be confirmed together in the purchase specification.
02
ASME SB443 / SB443M
ASME pressure vessel equivalent
ASME counterpart of ASTM B443 for pressure vessel and high-temperature applications.
03
AMS 5599 / AMS 5869
Aerospace Material Specification - Inconel 625 plate / sheet
Aerospace Material Specification references for Inconel 625 plate, sheet and strip.
04
ASTM B168 / B168M
Nickel-chromium-iron alloy plate, sheet and strip
Standard specification for nickel-chromium-iron alloy plate, sheet and strip for general corrosion-resistant and high-temperature service.
05
EN 10095
Heat-resisting steels and nickel alloys
European reference for heat-resisting steels and nickel alloys delivered in the form of plate, sheet, strip, bar, rod and section.
06
ISO 6208
Nickel and nickel alloy plate, sheet and strip
International reference for nickel and nickel alloy plate, sheet and strip for general corrosion-resistant service.
07
EN 10204
Inspection documents
Defines inspection document types such as 3.1 and 3.2 for metallic product delivery.
03
Capability
From custom dimensions and precision sizing to heat treatment, surface finishing and product-specific processing, Wayland coordinates supply solutions tailored to your requirements.
Cutting
Cut-to-length and custom cutting according to order requirements.
Custom Dimensions
Non-standard dimensions, tolerances and dimensional combinations subject to product and mill capability.
Slitting & Edge Processing
Slitting, edge trimming and related processing according to required width and edge condition.
Precision Sizing
Precision sizing and dimensional control for tighter tolerance requirements.
Cold Working
Cold drawing, cold sizing and other cold-working processes where required.
Heat Treatment
Heat treatment according to material, specification and applicable standard.
Surface Finishing
Surface treatment and finishing according to product, specification and application requirements.
Surface Coating & Plating
Coating, plating and other surface protection treatments according to product and application requirements.
Forming
Bending, forming and other shape modification according to drawings or order requirements.
Machining
Turning, drilling, milling and other machining operations where required.
Welding & Fabrication
Welding, fabrication and related assembly according to drawings and project requirements.
Testing & Inspection
Mechanical, chemical and NDT testing per the applicable standard and customer specification.
Customization
Custom dimensions, lengths, surface conditions, end preparations and inspection requirements can be supplied according to project specifications. Final capability is confirmed per enquiry based on grade, size range and applicable standard.
04
Quality
Inspection and documentation procedures are coordinated to meet the requirements of the applicable product standard and the project specification.
- Dimensional inspection Geometry, dimensions and tolerances against the applicable standard
- Visual and surface inspection Surface condition, marking and overall appearance
Documents
- Inspection Report
- Chemical analysis Per heat, against the applicable standard
- Mechanical testing Tensile, yield, elongation and hardness
- Non-destructive testing UT, eddy-current, hydrostatic or other NDT as applicable
- Positive material identification PMI for alloy verification when required
Documents
- Mill Test Certificate (MTC)
- Heat number traceability Heat number carried through MTC and product marking
- Third-party inspection coordination SGS / BV / TÜV on request
Documents
- Third-Party Inspection Report
- EN 10204 documentation 3.1 MTC standard; 3.2 on request
Documents
- EN 10204 3.1 Mill Test Certificate
- EN 10204 3.2 Inspection Certificate
- Certificate of Origin
05
Selection
A well-prepared specification is the most efficient defence against clarification cycles.
- 01 Select material & grade
Choose the material grade according to service conditions, performance requirements and applicable standards.
- 02 Define size & supply condition
Specify the required dimensions, surface condition, heat-treatment condition and delivery requirements.
- 03 Confirm standard & requirements
State the applicable product standard, dimensional standard and governing project specification.
- 04 Define inspection & documentation
Confirm inspection, testing, certification and documentation requirements before order placement.
Example procurement specification
A complete specification suitable for enquiry, covering product, technical requirements, certification and delivery terms.
- Product
- Inconel 625 Sheets & Plates
- Grade
- Inconel 625
- Standard
- ASTM B443
- Dimensions
- Thickness 10.0 mm x Width 1500 mm x Length 3000 mm; Annealed; or per drawing
- Condition
- Solution Annealed; Annealed & Pickled; Mill Edge
- Certification
- EN 10204 3.1 Mill Test Certificate
- Quantity
- 20 Metric Tons
- Packaging
- Seaworthy Export Packing
- Incoterm
- CIF Hamburg
06
Logistics
From mill dispatch to destination port, each stage is coordinated with the nominated forwarder and documented against the purchase specification.
-
Packaging
Export-suitable packaging with surface and edge protection.
Bundled, wrapped or crated according to product form and transport mode. Outer surface protected with weather-resistant material; ends and edges shielded against transit damage.
-
Loading
FCL container for standard sizes; break bulk for oversized cargo.
Container loading via nominated forwarder. LCL and dimensions outside container allowance coordinated against the mill dispatch schedule.
-
Documentation
Commercial invoice, packing list and certificate of origin.
Mill documentation travels with the shipment. EN 10204 3.1 / 3.2 certificates and third-party inspection reports provided as per purchase specification.
-
Shipment
Sea freight as standard; alternative routes on request.
FCL / LCL container shipment or break bulk for oversized dimensions. Logistics coordinated through the nominated forwarder.
-
Delivery
FOB · CFR · CIF · FCA · EXW arrangements available.
Incoterm 2020. Port of loading: Shanghai / Ningbo / Shenzhen. Final destination and terms confirmed per enquiry.
07
FAQ
Most enquiries reduce to a small set of recurring technical questions.
01 What is Inconel 625 plate?
Inconel 625 (UNS N06625 / NiCr22Mo9Nb / 2.4856) is a nickel-chromium alloy strengthened by molybdenum and niobium additions. Plate and sheet supplied per ASTM B443 / ASME SB443 deliver exceptional resistance to pitting, crevice and stress-corrosion cracking and are suitable for service from cryogenic temperatures up to approximately 1000 °C.
02 What thickness range is available for Inconel 625 plate?
Cold rolled sheet is typically supplied from 0.5 mm up to approximately 4 mm. Hot rolled plate is supplied from approximately 4.7 mm up to 75 mm per ASTM B443, with thicker plate subject to mill capability and order quantity.
03 What is the difference between Inconel 625 plate and 625 sheet?
Both are produced from the same Inconel 625 alloy. Sheet refers to cold rolled product in thinner gauges (typically up to 4 mm) with tighter thickness tolerance. Plate refers to hot rolled product in heavier gauges with tolerances and delivery conditions per ASTM B443.
04 Is Inconel 625 plate suitable for welded fabrication?
Yes. Inconel 625 is readily weldable using GTAW, GMAW and other conventional processes with matching Inconel 625 filler (ERNiCrMo-3). Post-weld heat treatment is generally not required for the annealed condition.
05 What delivery condition is standard for Inconel 625 plate?
Solution annealed is the standard delivery condition. The plate is supplied in the annealed & pickled finish unless otherwise specified. Cold rolled sheet can also be supplied in the bright annealed condition.
06 Is Inconel 625 plate suitable for marine and offshore structures?
Yes. The high nickel and molybdenum content provides strong resistance to chloride-induced pitting and crevice corrosion. Inconel 625 plate is widely used for marine and offshore structural components, seawater-handling equipment and ducting in chloride-containing environments where 316L stainless is inadequate.