N07718 - API 6ACRA-2025 - H2ABC

中文版

	N07718
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

Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	Ti	B	Co	Pb	Al	Se	Mg ^*	Bi	Ca ^*	More
Minimum Value	-	-	-	-	-	17	50	-	2.8	0.8	-	-	-	0.4	-	-	-	-	Fe:Bal.；Nb+Ta:4.87~5.2
Maximum Value	0.045	0.35	0.35	0.01	0.01	21	55	0.23	3.3	1.15	0.006	1	0.001	0.6	0.0005	0.006	5.0E-5	0.003	Fe:Bal.；Nb+Ta:4.87~5.2

*To be determined if intentionally added

Mechanical Properties

thickness t mm	Mark	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Specified Plastic Yield Strength Rp_0.2 Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %	Hardness HBW	Impact Energy Absorption KV2 J
t≤254	120K	Solution Annealing + Age Hardening	≥1034	827~1000	≥20	≥35	HRC:32~40 HBW:315~388	t＜76 L:≥68 76≤t≤254 T:≥47
t＞254	120K	Solution Annealing + Age Hardening	≥1034	827~1000	≥20	≥25	HRC:32~40 HBW:315~388	T:≥41
t≤254	140K	Solution Annealing + Age Hardening	≥1138	965~1034	≥20	≥35	HRC:34~44 HBW:332~430	t＜76 L:≥68 76≤t≤254 T:≥47
t＞254	140K	Solution Annealing + Age Hardening	≥1138	965~1034	≥20	≥25	HRC:34~44 HBW:332~430	T:≥41
t≤254	150K	Solution Annealing + Age Hardening	≥1207	1034~1207	≥20	≥35	HRC:35~45 HBW:341~441	t＜76 L:≥68 76≤t≤254 T:≥47
t＞254	150K	Solution Annealing + Age Hardening	≥1207	1034~1207	≥20	≥25	HRC:35~45 HBW:341~441	T:≥41

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