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High temperature and high pressure stud

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Standard	Material Type & Grade		Normal Size (in.)	Length	Screw Thread	Mechanical Requirement
Standard	Material Type & Grade		Normal Size (in.)	Length	Screw Thread	σ_b (MPa)	σ_0.2 (MPa)	δ₄ (%)	ψ (%)	Hardness
ASME/ANSI B 16.5 ASME/ANSI B 18.2.1 ASME/ANSI B 1.1	A 193	B7	≤2.5	According to order	UNC, 8UN Accuracy of thread Grade 2A	≥860	≥725	16	50	≤HB321
		B7M	≤2.5			≥690	≥550	18		≤HB235
		B16	≤2.5			≥860	≥725	18		≤HB321
		B8/B8M/B8C/B8T (CL. 1)	All diameters			≥515	≥205	30	50	≤HB223
		B8/B8C/B8T (CL. 2)	≤0.75			≥860	≥690	12	35	≤HB321
			＞0.75~1			≥795	≥550	15
			＞1~1.25			≥725	≥450	20
			＞1.25~1.5			≥690	≥345	28	45
		B8M (CL. 2)	≤0.75			≥760	≥655	15	45
			＞0.75~1			≥690	≥550	20
			＞1~1.25			≥655	≥450	25
			＞1.25~1.5			≥620	≥345	30
	A 453	660 B	All diameters			≥895	≥585	15	18	HB248~341

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