Incoloy 25-6HN

TheHuaNickel 25-6HN alloy is a super austenitic stainless steel containing 6% molybdenum, which is enhanced by its nitrogen content. The high nickel content of alloy 25-6HN makes it thermally stable and resistant to stress corrosion cracking, and alloy 25-6HN has significantly improved strength and corrosion resistance in most environments.

Incoloy 25-6HNChemical composition：

C	Si	Mn	P	S	Ni	Cr	Mo	Cu	N
≤0.030	≤1.00	≤2.00	≤0.040	≤0.030	23.5~ 25.5	20.0~ 22.0	6.0~ 7.0	≤0.75	0.18~ 0.25

Incoloy 25-6HNPhysical properties：

Density		7.93g/cm
Melting point		1360〜1394℃
Specific heat		451J/kg・K
Resistivity		94.4μΩ・cm
Thermal conductivity		11.9
Average coefficient of thermal expansion	20〜100℃	14.8
	20〜200℃	15.3
	20〜300℃	15.6
	20〜400℃	15.9
Magnetism		Not

Incoloy 25-6HNMechanical properties：

size	Plate thickness(mm)	Yield strength(N/mm²)	Tensile strength(N/mm²)	Elongation(%)	hardness
	>4.8 ≤4.8	≥310 ≥310	≥650 ≥690	≥30 ≥30	≤240HBN ≤100HRB
Hot rolled products	6.0	422	770	49	207HBN

Incoloy 25-6HNAlloy properties：

Excellent resistance to pitting and crevice corrosion in chloride solutions

Practical immunity to stress corrosion cracking in NaCl environments

High strength and toughness

Incoloy 25-6HNUses of alloys：

It is mainly used in FGD scrubbers, reverse osmosis, distillation columns, offshore oil and gas, and heat exchangers

Incoloy 25-6HNProcess performance：

Welding process: Laser welding or gas shielded welding with welding methods suitable for Incoloy 25-6HN, which often provide more uniform heating and cooling rates, helping to reduce crack formation.

Relevant standards：

ASTMB 688、ASTMA 240、ASTM B 675、ASTM A 312、ASTM B 676、ASTM A 249、ASTMB 804、ASTM B 691、ASTM A 479、ASTM B 462、ASTM A 182、ASTMB 564、ASTM B 366、ASTMB 472