σU
MPa

CHH1

for parts with high corrosion resistance in the gas, air, alkaline environments under friction and wear; heat resistant in air to 500 degrees C

Classification

Country	Section	Category
Country	Section	Category
CIS, Russia, Ukraine	Cast iron	Low alloy cast iron

Chemical composition

Standard	Fe, %	Si, %	Mn, %	Cr, %	P, %	C, %	S, %
Standard	Fe, %	Si, %	Mn, %	Cr, %	P, %	C, %	S, %
GOST 7769-82	91.28–95.1	1.5–2.5	< 1	0.4–1	< 0.3	3–3.8	< 0.12

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Mechanical properties at 20 °C

Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	Treatment
Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	Treatment
Casting	GOST 7769-82				170

Brinell hardness number

Rolling	Standard	Classifiers	Value, HBW
Rolling	Standard	Classifiers	Value, HBW
	GOST 7769-82		207–286

Standards

Standard	Description
Standard	Description
GOST 7769-82

Description of chemical elements

Element	Units of measurement	Description
Element	Units of measurement	Description
Fe	%	Iron
Si	%	Silicon
Mn	%	Manganese
Cr	%	Chrome
P	%	Phosphorus
C	%	Carbon
S	%	Sulfur

Description of mechanical properties

Parameter	Units of measurement	Description
Parameter	Units of measurement	Description
$\sigma _{U}$	$MPa$	Ultimate tensile strength