Nickel Alloy 31 Sheet

1. Material grade: ASTM B625, ASME SB 625
2. Width: 1000~2500mm or as per your requirements
3. Length: 0~12m or as per your requirements
4. Thickness: 0.5~ 50mm or as per your requirements

Send Inquiry

Product Introduction

Alloy 31 is designed to bridge the performance and cost gap between traditional austenitic stainless steels (such as 316L) and more expensive high-end nickel-based alloys (such as C-276). HT PIPE is a alloy 31 plate sheet supplier with 15+ export experience. Contact us for more information and quotes for free!

uns n08031 steel plate Corrosion Resistance

astm b625 alloy 31 Sulfuric Acid

Excellent performance across a wide range of concentrations and temperatures. For example, in boiling 10% sulfuric acid, the corrosion rate is well below 1 mm/year. It also maintains excellent stability in 96% concentrated sulfuric acid at 60°C, far exceeding that of 316L and even 904L. The contribution of copper is crucial in this regard.

nickel alloy 31 plate Phosphoric Acid

Excellent resistance to corrosion and erosion corrosion in wet-process phosphoric acid environments containing high temperatures and impurities (such as fluorides and chlorides), making it an ideal choice for evaporators, heat exchangers, and pipelines.

ni 31 sheet Mixed Acids

Demonstrates strong comprehensive resistance in complex mixed acid media such as sulfuric acid + hydrochloric acid and sulfuric acid + hydrofluoric acid.

alloy 31 steel plate Chloride Environments

The extremely high PREN value (Pitting Equivalent Number, Cr% + 3.3xMo% + 16xN% ≈ 43-45) indicates excellent resistance to pitting and crevice corrosion, and performs reliably in environments such as seawater, salt spray, and chlorine bleach. It also passes rigorous Green Death tests (boiling 11.5% H₂SO₄ + 1.2% HCl + 1% FeCl₃ + 1% CuCl₂).

Specification of 1.4562 Alloy 31 Sheets & Plates

Specifications	ASTM B625 / ASME SB625
Dimensions	ASTM, ASME, and API
Width	1000mm, 1219mm, 1500mm, 1800mm, 2000mm, 2500mm, 3000mm, 3500mm, etc
Thickness	4mm-100mm
Length	2000mm, 2440mm, 3000mm, 5800mm, 6000mm, etc
Surface Finish	2B, 2D, BA, NO.1, NO.4, NO.8, 8K, mirror, chequered, embossed, hairline, sand blast, Brush, etching, Hot rolled plate (HR), Cold rolled sheet (CR), SATIN
Hardness	Soft, Hard, Half Hard, Quarter Hard, Spring Hard etc.
Form	Coils, Foils, Rolls, Plain Sheet, Shim Sheet, Perforated Sheet, Chequered Plate, Strip, Flats, Blank (Circle), Ring (Flange) etc.

Contact now

Chemical Composition of Alloy 31 Plate

%	Cr	Mn	Fe	Mo	Si	P	Ni	S	Cu	C	N
Min	26.0	-	Rest	6.00	-	-	30.0	-	1.00	-	0.15
Max	28.0	2.00	-	7.00	0.30	0.02	32.0	0.01	1.40	0.015	0.25

n08031 plate Excellent Mechanical and Physical Properties

Strength: Significantly higher than standard austenitic stainless steel.
Typical room temperature mechanical properties: Tensile strength ≥ 650-750 MPa, yield strength ≥ 300-350 MPa, elongation ≥ 40%. Significant nitrogen solid solution strengthening.
Toughness: Maintains good impact toughness even at low temperatures (e.g., liquid nitrogen).
Physical Properties: Its coefficient of thermal expansion is similar to that of carbon steel, resulting in lower thermal stresses when joining dissimilar metals (e.g., clad plates). Its thermal conductivity is superior to that of pure nickel alloys.

Application of alloy 31 plate

Oil and gas: submarine pipelines, downhole tools for acid gas wells.

Chemical equipment: sulfuric acid reactors, phosphoric acid evaporators, pickling equipment.

Nuclear industry: containers and pipelines for nuclear waste treatment systems.

Marine engineering: seawater desalination devices, heat exchangers.

Environmental protection: key components of flue gas desulfurization (FGD) systems.

steel plate no8031 Machinability and Fabrication

Formability: It exhibits good hot and cold workability, allowing for operations such as stamping, deep drawing, and spinning. However, consideration should be given to the springback and processing forces associated with its higher strength compared to 304/316.

Weldability: Excellent weldability when using matching consumables (e.g., ERNiCrMo-11). Conventional welding methods (TIG/GTAW, MIG/GMAW, and SMAW) are all suitable, and post-weld heat treatment is generally not required. However, strict control of heat input and interpass temperature is required to avoid sensitization of the heat-affected zone (although the risk is extremely low).