1.7707 (30CrMoV9)

Classification

Country	Section	Category
Country	Section	Category
Germany	Structural, Pressure Vessel and Engineering Steels	Cr-Mo-V

Chemical composition

Standard	Fe, %	Si, %	Mn, %	Cr, %	Ni, %	V, %	P, %	C, %	S, %	Mo, %
Standard	Fe, %	Si, %	Mn, %	Cr, %	Ni, %	V, %	P, %	C, %	S, %	Mo, %
EN 10250-3	94.74–96.79	< 0.4	0.4–0.7	2.3–2.7	< 0.6	0.1–0.2	< 0.035	0.26–0.34	< 0.035	0.15–0.25

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Mechanical properties at 20 °C

Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	$\epsilon_L$ , %	$\epsilon_T$ , %	$R_{eH}$ , $MPa$	Treatment
Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	$\epsilon_L$ , %	$\epsilon_T$ , %	$R_{eH}$ , $MPa$	Treatment
		< 160		moderate hardening	900	12	8–10	700
		160–330		moderate hardening	800	14		590

Brinell hardness number

Rolling	Standard	Classifiers	Value, HBW
Rolling	Standard	Classifiers	Value, HBW
		soft, annealing	< 248

Analogues

CIS, Russia, Ukraine
CIS, Russia, Ukraine
EI415
EI415-VD
EI415-Sh
EI415A
EI415A-VD
EI415A-Sh
EI579

Standards

Standard	Description
Standard	Description
EN 10250-3

Description of chemical elements

Element	Units of measurement	Description
Element	Units of measurement	Description
Fe	%	Iron
Si	%	Silicon
Mn	%	Manganese
Cr	%	Chrome
Ni	%	Nickel
V	%	Vanadium
P	%	Phosphorus
C	%	Carbon
S	%	Sulfur
Mo	%	Molybdenum

Description of mechanical properties

Parameter	Units of measurement	Description
Parameter	Units of measurement	Description
$\sigma _{U}$	$MPa$	Ultimate tensile strength
$\epsilon_L$	%	Elongation at break (longitudinal)
$\epsilon_T$	%	Elongation at break (transverse)
$R_{eH}$	$MPa$	Upper yield point