Elliptical heads

Specification according to DIN 28013

r1	=	0,8	*	da
r2	=	0,154	*	da
da	=	Da	=	D
h1	> =	3	*	s
h2	=	0,255	*	da	–	0,635	*	s
h3	=	h1	+	h2
H	=	h3	+	s
V	≈	0,13	*	(da-2*s)³	+	(da-2*s)²	*	h1	*	0,785
Aa	≈	1,08	*	da²	+	h1	*	da	*	3,14
Ai	≈	1,08	*	(da-2*s)²	+	h1	*	(da-2*s)	*	3,14

(r1: Dish radius | r2: Knuckle radius | da: Outer diameter | h1: Straight flange height | h2: Depth of dishing | h3: total internal head height | s: Wall thickness | V: Volume | Aa: outer surface | Ai: inner surface)

Tolerances

Tolerances for height, scope, out-of-roundness, wall thickness, etc. are in accordance with DIN 28013 – Elliptical heads.