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

Datasheet for: Steel Grades:High Alloy: 690

Category	Type	Steel Grade
Steel Grades	High Alloy	690
		684
		N07500
		685
		N07001
		686
		687
		688
		N07750
		689
		N07252

Chemical composition(mass fraction)(wt.%) of the 690

C ≤	Si ≤	Mn ≤	P ≤	S ≤	Cr	Ni
0.03	1.00	0.80			18.00	38.00
Mo	Al	Cu	Nb	Ti	V	Ce
3.20	00.20			2.75
N	Co	Pb	B	Other	Approximate rnumbe
	20.00			Fe...	Refractaloy 26

Mechanical Properties of steel grade 690

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)
932 (≥)	213 (≥)	12	33	44	Solution and Aging, Annealing, Ausaging, Q+T,etc	441

Physical Properties of steel grade 690

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
22	-	-			0.14	-
123	856	-	42.3	313		-
814	-	12	42.2			411	234

Heat Treatment of steel grade 690

Heat treated : 1853°C - 1749°C

Technological Curves of steel grade 690

No Curve

Cross Reference Table (Equivalent Grade) of 690

Grade	Standard	Country	Application
AISI 690	AISI	USA	precipitation hardening
NCF690	JIS	Japan	ferritic stainless steel
NCF690TB	JIS	Japan	ferritic stainless steel
NCF690TP	JIS	Japan	ferritic stainless steel
P690Q			Spain structural alloy steel
P690QH			Spain structural alloy steel
P690QL1			Spain structural alloy steel
P690QL2			Spain structural alloy steel
Q690		China	China structural steel and alloy steel
Q690		China	China structural steel and alloy steel
EN S6900	EN		Euronorm Structural steel
EN S6900L	EN		Euronorm Structural steel
EN S6900L1	EN		Euronorm Structural steel
EN S690A	EN		Euronorm Structural steel
EN P690QH	EN		Euronorm Structural steel
EN P690Q	EN		Euronorm Structural steel
EN P690QH	EN		Euronorm Structural steel
EN P690QL1	EN		Euronorm Structural steel
EN P690QL2	EN		Euronorm Structural steel
EN P690Q	EN		Euronorm Structural steel

Available Suppliers

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Our main peoducts of steel are many kinds of special steel, like tool steel, mould steel, alloy steel, alloy constructural steel, heat-resistant steel, high speed tool steel,spring steel and bearing steel , stainless steel and so on, which have formed 12 series and more than 350 varieties with n...

Rfq.: sales@longhaisteel.com

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