GBT 45

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45 Profile
45 Chemical composition
45 Mechanical Properties
45 Physical Properties
45 Heat treatment
45 Size Availability
45 Relevant products

Profile

This page is mainly introduced the 45 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 45,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
45

Steel Garde:45
Type:Special Alloy
Country:China
Standard:GBT
Application:China structural steel and alloy steel

Relevant products:

45Cr14Ni14W2Mo forging

4145H Hollow Bar

S30453/304LN/1-4311 Tube

S32168/321/S32100/1-4541 Tube

17-7PH(631,UNS S1...

17-4ph(S17400,630)...

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
Q345q E		China
Q345q C		China
SM45		China
SM45A		China
CPM Rex 45	AISI	USA
CPM Rex 45HS	AISI	USA
1.1545	DIN	Germany
1.1645	DIN	Germany
C45W	DIN	Germany
145Cr6	DIN	Germany
45SiCrV6	DIN	Germany
45CrMoV7	DIN	Germany
1.2453	DIN	Germany
45WCrV7	DIN	Germany
45NiCr6	DIN	Germany
1.2745	DIN	Germany
45NiCrMoV16-6	DIN	Germany
X45NiCrMo4	DIN	Germany
145V33	DIN	Germany
1.2345	DIN	Germany
45CrVMoW5-8	DIN	Germany
X45CoCrWV5-5-5	DIN	Germany
X45CoCrMoV5-5-3	DIN	Germany
1.3245	DIN	Germany
X45		UK
X45		UK
45SiCrMo6	AFNOR	France
45SiCrMo6	AFNOR	France
45WCrV8	AFNOR	France
45WCrV8	AFNOR	France
45CrMoV6	AFNOR	France
45CrMoV6	AFNOR	France
CT45	SS	Sweden
CT45	SS	Sweden
CT45	SS	Sweden
CT45	SS	Sweden
CT45	SS	Sweden
CT45	SS	Sweden
CT45	SS	Sweden
CT45	SS	Sweden
CT45	SS	Sweden
CT45	SS	Sweden
B45	SS	Sweden
B45	SS	Sweden
H45	SS	Russia
H45	SS	Russia
C45U	ISO	ISO
C45U	ISO	ISO
45NiCrMo16	ISO	ISO
45NiCrMo16	ISO	ISO

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	643～758	σb/MPa
Yield Strength	732	σ 0.2 ≥/MPa
Elongation	31	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	802～262	-
HRC	30	-

Physical Properties

Thermal expansion	35-53	e-6/K
Thermal conductivity	48-73	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	3150-1000	째C
Density	8683-0827	kg/m³
Resistivity	0.50-0.60	Ohm.mm²/m

Heat Treatment Regime

Annealing	Quenching	Tempering	Normalizing	Q & T
√	√	√	√	√

Size Availability

Steel Grade	Specification	Processing range(mm)
45 Special Alloy	Round Bar and Hollow Bar	Φ1 to Φ2000
	Square and Flat Steel	Φ10 to Φ100
	Plate and Sheet	0.08-800(Thickness)10-1500(Width)Length
	Tube or Pipe	OD:Φ4-410; WT:1-35 mm; Lenght:10-12000
	Coil and Strip Steel	THK:0.1mm Width:1500mm
	Forged	Ring/Cylindrical/Disk