WERKSTOFF 1.4529 AISI 926 UNS N08926

Superustenitic stainless steel W 1.4529 AISI 926 UNS N08926 is similar to 316L but with the addition of molybdenum, which gives superior resistance to localized corrosion attack (pitting and crevice corrosion). With a PREN value between 41 and 48, it is one of the suitable solutions for applications in warm seawater and other high chloride environments. The high nickel content results in better resistance to stress corrosion than standard austenitic grades. Copper in the alloy adds resistance to sulfuric and other reducing acids particularly in the very aggressive “medium concentration” range. In most environments, W 1.4529 AISI 926 UNS N08926 steel has intermediate corrosion performance between the standard 316L austenitic grade and molybdenum-rich (about 6%) or super austenitic types of materials. EN ISO 3506-1 and EN 3506-2 classify this material as A8 suitable for structural applications as per DIN-EN 1993-1-4:2015-10/EUROCODE 3-ANNEX A CRC classes. It finds application in piping systems, pollution control equipment, heat exchangers, and bleaching systems.

CHEMICAL COMPOSITION W 1.4529 AISI 926 UNS N08926

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Element	Min	Max
C		0.02
S		0.0010
P		0.0030
Yes		0.50
Mn		1.00
Cr	19.00	21.00
Ni	24.00	26.00
Mo	6.00	7.00
Cu	0.50	1.00
N	0.15	0.25

MECHANICAL CHARACTERISTICS W 1.4529 AISI 926 UNS N08926

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Material	League	Rm (MPa)	Rp 0.2 min (MPa)	A% min	Hardness max
AISI 926 UNS N08926	1.4529	650-850	300	35	250

PHYSICAL PROPERTIES W 1.4529 AISI 926 UNS N08926

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• Specific gravity: kg/cm³ 20°C – 8.1 kg/dm³
• Modulus of elasticity: N/mm² 20°C – 195,000
• Thermal conductivity: W/m.K. (20°C) – 12
• Specific heat: J/g.K. (20°C) – 450
• Amagnetic

 

SPECIFICATION AND DESIGNATIONS W 1.4529 AISI 926 UNS N08921

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• W.: 1.4529
• UNS: N08926
• AISI: 926
• EN: X1NiCrMoCuN25-20-7
• ASME: SB649
• BRAND: Cronifer® 1925hMo
• EN 3506
• DIN EN: 1993-1-4:2015-10
• NACE: MR0175