UNI X 21O Cr 13 KU

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Description

UNI UNI X 21O Cr 13 KU Tool Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Tool Steel: UNI X 21O Cr 13 KU

Category	Type	Steel Grade	Standard
Steel Grades	Tool Steel	UNI X 21O Cr 13 KU	UNI
		ST30E
		ST40E
		T12A
		T3S
		U1
		U10E
		UNI 130505 KU
		UNI 58 WCr 9 KU
		UNI 88 Mn V 8 KU
		UNI KU

Chemical composition(mass fraction)(wt.%) of the UNI X 21O Cr 13 KU

Element	Weight %
C	2.00-2.35
Mn	0.60
Si	0.60
Cr	11.00-13.50
Ni	0.30
W	1.00
V	1.00
Cu	0.25
P	0.03
S	0.03

Mechanical Properties of steel grade UNI X 21O Cr 13 KU

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)
481 (≥)	729 (≥)	33	43	44	Solution and Aging, Annealing, Ausaging, Q+T,etc	113

Physical Properties of steel grade UNI X 21O Cr 13 KU

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
13	-	-			0.22	-
132	537	-	22.3	324		-
267	-	13	11.2			333	213

Heat Treatment of steel grade UNI X 21O Cr 13 KU

Heat treated : 1922°C - 1859°C

Technological Curves of steel grade UNI X 21O Cr 13 KU

No Curve

Cross Reference Table (Equivalent Grade) of UNI X 21O Cr 13 KU

Grade	Standard	Country	Application
UnitempAF2-1		USA	Martensitic special steel
UnitempHS	AISI	USA	Martensitic special steel
Q195		China	Engineering and welding
Q215		China	Engineering and welding
Q215 B		China	Engineering and welding
Q235		China	Engineering and welding
Q235 B		China	Engineering and welding
Q235 C		China	Engineering and welding
Q235 D		China	Engineering and welding
Q255 A		China	Engineering and welding
Q255 B		China	Engineering and welding
Q275		China	Engineering and welding
Q235q C		China	Bridge structure with steel
Q235q D		China	Bridge structure with steel
Q345q E		China	Bridge structure with steel
Q345q C		China	Bridge structure with steel
ASTM 1030	ASTM	USA	General use carbon steel bar
UNS G10300	UNS	USA	General use carbon steel bar
ASTM 1005	ASTM	USA	General use carbon steel bar
UNS G10050	UNS	USA	General use carbon steel bar

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