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8 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 8

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GBT 8

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

Profile

This page is mainly introduced the 8 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 8,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
8

Steel Garde:8
Type:Special Alloy
Country:China
Standard:GBT
Application:China structural steel and alloy steel

Relevant products:

A387 F5 / Grade 5 Coil / Sheet

1.4980 Round Bar

1.4980

GH 3536 Sheet

UNS NO7718 Coil/Strip/Sheet

Cr8 flat bar

IncoloyA-286 / GH 2132

S66286 round bar

Inconel718 round bar

NO8020 round bar

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
ASTM 1008	ASTM	USA
UNS G10080	UNS	USA
ASTM 1018	ASTM	USA
UNS G10180	UNS	USA
T8		China
T8Mn		China
8MnSi		China
3Cr2W8V		China
5Cr4Mo3SiMnVA1		China
8Cr3		China
SM50		China
SM48		China
W18Cr4V		China
W18Cr4VCo8		China
W18Cr4V2Co8		China
W2Mo9Cr4VCo8		China
YG8A		China
H10	ASTM	USA
T20811	UNS	USA
T20810	UNS	USA
T20812	UNS	USA
H13	ASTM	USA
T20813	UNS	USA
T20814	UNS	USA
T20819	UNS	USA
T20821	UNS	USA
T20822	UNS	USA
H23	ASTM	USA
T20823	UNS	USA
T20824	UNS	USA
T20825	UNS	USA
T20826	UNS	USA
T20841	UNS	USA
T20842	UNS	USA
T20843	UNS	USA
A8	ASTM	USA
T30108	UNS	USA
ASTM A182 F55	ASTM	USA
T12008	UNS	USA
M48	ASTM	USA
CQ-8	AISI	USA
CX-8	AISI	USA
CY-8	AISI	USA
C-8	AISI	USA
C-8A	AISI	USA
Stellite 8
Stellite 98M2
Stellite 158
Stellite 228
Stellite 238

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	329～318	σb/MPa
Yield Strength	126	σ 0.2 ≥/MPa
Elongation	53	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	312～149	-
HRC	30	-

Physical Properties

Thermal expansion	47-17	e-6/K
Thermal conductivity	79-34	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	6809-6957	째C
Density	3437-2672	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)
8 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