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ISO H7 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of ISO H7

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ISO ISO H7

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This page is mainly introduced the ISO H7 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of ISO H7,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Heat-resistant steels

Steel Garde:ISO H7
Type:Stainless Steels
Country:International
Standard:ISO

Standard Number:

ITEM	Standard Number	Descriptions
1	ISO 15510 (2010)	Stainless steels -- Chemical composition
2	ISO 4955 (2005)	Heat-resistant steels
3	ISO 16143-3 (2005)	Stainless steels for general purposes -- Part 3: Wire

Metallographic Structure:Ferrite
Application:Heat-resistant steels

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C		0.20
Si		1.00
Mn		1.00
P		0.040
S		0.030
Cr	24.00	28.00
Ni		1.00
N	0.15	0.25

Mechanical Properties

Tensile strength	932～830	σb/MPa
Yield Strength	528	σ 0.2 ≥/MPa
Elongation	48	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	665～688	-
HRC	30	-

Physical Properties

Thermal expansion	82-38	e-6/K
Thermal conductivity	39-77	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	3320-3323	째C
Density	9940-2613	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)
ISO H7 Stainless Steels	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