Inconel 625 round bar ASTM B446 UNS N06625 Rod Manufacturer in China

ASTM B446 covers nickel-chromium-molybdenum alloy bars and forgings, specifically for Alloy 625 (UNS N06625), a corrosion-resistant alloy widely used in high-temperature and high-corrosion environments.

Inconel 625 round bar, also known as UNS N06625, is a high-performance alloy primarily composed of 58% nickel and 20% chromium, with additional elements including iron, manganese, silicon, molybdenum, cobalt, aluminum, titanium, niobium, tantalum, phosphorus, and sulfur

Inconel 625 Round Bar Specification

ASME and ASTM designationASTM B446 / ASTM SB446
Dimensions Schedule ASTM, ASME
OD Size Ranges5 To 500 mm

Chemical Composition of UNS N06625

ElementComposition Range (%)
Nickel (Ni)58.0 min (remainder)
Chromium (Cr)20.0–23.0
Molybdenum (Mo)8.0–10.0
Iron (Fe)5.0 max
Columbium (Nb)3.15–4.15
Titanium (Ti)≤ 0.40
Aluminum (Al)≤ 0.40
Carbon (C)≤ 0.10
Manganese (Mn)≤ 0.50
Silicon (Si)≤ 0.50
Phosphorus (P)≤ 0.015
Sulfur (S)≤ 0.015

Mechanical Properties of N06625 round bar

PropertyValue
Tensile Strength≥ 120 ksi (827 MPa)
Yield Strength (0.2% offset)≥ 60 ksi (414 MPa)
Elongation≥ 30%
Hardness≤ 32 HRC (typically softer for machining ease)

Inconel 625 Round Bar Equivalent Grade

STANDARDWERKSTOFF NR.UNSJISBSGOSTAFNOREN
Inconel 6252.4856N06625NCF 625NA 21ХН75МБТЮNC22DNB4MNiCr22Mo9Nb

benefit of N06625 round bar

Corrosion Resistance:

  • Excellent resistance to oxidation and corrosion, especially in highly acidic and marine environments.
  • Resistant to pitting, crevice corrosion, and stress-corrosion cracking.

High-Temperature Strength:

  • Maintains strength and oxidation resistance up to 980°C (1800°F).

Mechanical Strength:

  • High yield and tensile strength without the need for precipitation hardening or cold working.