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ISO H18 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of ISO H18

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ISO ISO H18

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This page is mainly introduced the ISO H18 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of ISO H18,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Steel flat products for pressure purposes - Technical delivery conditions - Part 7: Stainless steels

Steel Garde:ISO H18
Type:Stainless Steels
Country:International
Standard:ISO

Standard Number:

ITEM	Standard Number	Descriptions
1	ISO 15510 (2010)	Stainless steels -- Chemical composition
2	ISO 16143-3 (2005)	Stainless steels for general purposes -- Part 3: Wire
3	ISO 4955 (2005)	Heat-resistant steels
4	ISO 9328-5	Steel plates and strips for pressure purposes - Technical delivery conditions - Part 5: Weldable fine grain steels, thermomechanically rolled
5	ISO 9328-7 (2011)	Steel flat products for pressure purposes - Technical delivery conditions - Part 7: Stainless steels

Metallographic Structure:Austenite
Application:Steel flat products for pressure purposes - Technical delivery conditions - Part 7: Stainless steels

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C		0.10
Si		1.00
Mn		1.50
P		0.015
S		0.015
Cr	19.00	23.00
Ni	30.00	34.00
Al	0.15	0.60
Ti	0.15	0.60
Cu		0.70

Mechanical Properties

Tensile strength	027～371	σb/MPa
Yield Strength	414	σ 0.2 ≥/MPa
Elongation	70	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	912～423	-
HRC	30	-

Physical Properties

Thermal expansion	46-30	e-6/K
Thermal conductivity	27-63	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	2351-7229	째C
Density	0521-2440	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 H18 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