Aluminium · Aluminium extrusions · isotropic

EN AW-7020 T6

Name: EN AW-7020 T6 — material properties (EN 1999-1-1)
Creator: BadgerMecX

EN 1999-1-1 · extrusions and drawn tube · buckling class A

EN AW-7020 T6 is an aluminium alloy and temper for extrusions to EN 1999-1-1. Its characteristic 0.2 % proof strength is 275–290 MPa, depending on the product form and thickness. E = 70 GPa, ν = 0.3 and α = 23 × 10⁻⁶/K (design values).

Record: al-7020-t6-ext
Library: v1.1.0
Properties: 9
Sources: 1
Build check: passed ✓
Viewing as: guest

E · Young's modulus 70GPa design^[1]

ν · Poisson's ratio 0.3– design^[1]

f_o · 0.2 % proof strength 290MPa char^[1]EP, ET, ER/B · t ≤ 15 mm

f_u · Tensile strength (R_m) 350MPa char^[1]EP, ET, ER/B · t ≤ 15 mm

ρ · Density 2700kg/m³ design^[1]

α · Coefficient of thermal expansion 2310⁻⁶/K design^[1]

Elastic constants

isotropic

Symbol	Property	Value	Unit	Basis	Ref.
E	Young's modulus ⓘ EN 1999-1-1 3.2.5	70	GPa	design	[1]
G	Shear modulus	27	GPa	design	[1]
ν	Poisson's ratio	0.3	–	design	[1]
K	Bulk modulus K = E / 3(1 − 2ν)	58.33	GPa	derived	—
λ_L	Lamé constant λ_L = Eν / (1 + ν)(1 − 2ν)	40.38	GPa	derived	—
c₀	Bar wave speed c₀ = √(E/ρ)	5092	m/s	derived	—

Physical, thermal and electrical

at 20 °C

Symbol	Property	Value	Unit	Basis	Ref.
α	Coefficient of thermal expansion ⓘ for T < 100 °C	23	10⁻⁶/K	design	[1]
ρ	Density	2700	kg/m³	design	[1]

Strength

a band applies up to and including its upper limit

Property	Product form	Thickness	Value	Unit	Basis	Ref.
f_o	EP, ET, ER/B — EP, ET, ER/B	t ≤ 15 mm	290	MPa	char	[1]
f_o	EP, ET, ER/B — EP, ET, ER/B	t ≤ 40 mm	275	MPa	char	[1]
f_o	DT — drawn tube	t ≤ 20 mm	280	MPa	char	[1]
f_u	EP, ET, ER/B — EP, ET, ER/B	t ≤ 15 mm	350	MPa	char	[1]
f_u	EP, ET, ER/B — EP, ET, ER/B	t ≤ 40 mm	350	MPa	char	[1]
f_u	DT — drawn tube	t ≤ 20 mm	350	MPa	char	[1]

Symbol	Property	Value at t = 15 mm · EP, ET, ER/B	Unit	Basis	Ref.
f_o	0.2 % proof strength ⓘ thickness is the upper limit of each row	290	MPa	char	[1]
f_u	Tensile strength (R_m)	350	MPa	char	[1]
f_o,haz	0.2 % proof strength in the heat-affected zone ⓘ MIG welding; EN 1999-1-1 reduces HAZ values for TIG and thicker parts	205	MPa	char	[1]
f_u,haz	Tensile strength in the heat-affected zone	280	MPa	char	[1]

Sources

every value names one

EN 1999-1-1:2007, Eurocode 9 — Design of aluminium structures, Table 3.2b and 3.2.5Copies checked: 1, 2, 3, 4

min product standard minimum char characteristic design code value for design typical datasheet or textbook derived worked out here, formula shown

Cite this page

for reports and papers

BadgerMecX Materials (2026). EN AW-7020 T6 — material properties, EN 1999-1-1. Library v1.1.0, record al-7020-t6-ext. https://badgermecx.com/materials/al-7020-t6-ext/ (accessed 2026-10-08).

@misc{badgermecx_al7020t6ext,
  title  = {EN AW-7020 T6 -- material properties, EN 1999-1-1},
  author = {{BadgerMecX Materials}},
  year   = {2026},
  note   = {Library v1.1.0, record al-7020-t6-ext},
  url    = {https://badgermecx.com/materials/al-7020-t6-ext/}
}

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