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685 High Alloy and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:High Alloy: 685

Category	Type	Steel Grade
Steel Grades	High Alloy	685
		671
		R30816
		680
		N06002
		681
		682
		683
		N07041
		684
		N07500

Chemical composition(mass fraction)(wt.%) of the 685

C ≤	Si ≤	Mn ≤	P ≤	S ≤	Cr	Ni
0.07	0.10	0.10			19.75	...
Mo	Al	Cu	Nb	Ti	V	Ce
4.45	1.40			3.00
N	Co	Pb	B	Other	Approximate rnumbe
	13.50		0.005	Fe 0.75 Zr 0.04	Warpaloy

Mechanical Properties of steel grade 685

Yield R_p0.2 (MPa)	Tensile R_m (MPa)	Impact KV/Ku (J)	Elongation A (%)	Reduction in cross section on fracture Z (%)	As-Heat-Treated Condition	Brinell hardness (HBW)
558 (≥)	967 (≥)	22	11	43	Solution and Aging, Annealing, Ausaging, Q+T,etc	332

Physical Properties of steel grade 685

Temperature (°C)	Modulus of elasticity (GPa)	Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and	Thermal conductivity (W/m·°C)	Specific thermal capacity (J/kg·°C)	Specific electrical resistivity (Ω mm²/m)	Density (kg/dm³)	Poisson’s coefficient, ν
44	-	-			0.31	-
552	471	-	14.3	422		-
448	-	34	14.2			412	442

Heat Treatment of steel grade 685

Heat treated : 1927°C - 1748°C

Technological Curves of steel grade 685

No Curve

Cross Reference Table (Equivalent Grade) of 685

Grade	Standard	Country	Application
AISI 685	AISI	USA	precipitation hardening
SHY 685NS			Welding structure with high yield strength steel grade of steel sheet
SHY 685N / SHY 70N			Welding structure with high yield strength steel grade of steel sheet
SHY 685 /SHY 70			Welding structure with high yield strength steel grade of steel sheet

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Rfq.: sales@longhaisteel.com

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685