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N09945
Corresponding Standard API 6ACRA-2025
Age-Hardened Nickel-Based Alloys for Oil and Gas Drilling and Production Equipment
Classification Nickel and Nickel Alloys
Properties Corrosion Resistance High-Temperature Resistance
Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Cu Mo Ti Nb Al More
Minimum Value 0.005 - - - - 19.5 46.5 1.5 3 0.5 2.8 0.01 Fe:Bal.
Maximum Value 0.04 0.5 1 0.02 0.01 23 48 3 4 2.5 3.5 0.7
Mechanical Properties
thickness
t
mm		 Mark
Heat Treatment or Condition
Tensile Strength
σb
Mpa 		Specified Plastic Yield Strength
Rp0.2
Mpa 		Elongation or Extension Rate
δ
% 		Reduction of Area
ψ
% 		Hardness
HBW 		Impact Energy Absorption
KV2
J
t≤254 125K Solution Annealing + Age Hardening ≥1034 862~1069 ≥18 ≥25 HRC:32~42
HBW:315~409		 t＜76
L:≥68
76≤t≤254
T:≥54
t＞254 125K Solution Annealing + Age Hardening ≥1034 862~1069 ≥18 ≥20 HRC:32~42
HBW:315~409		 T:≥41

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