ASTM A1066 Grade 550

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Description

High-Strength Low-Alloy Structural Steel Plate Produced by Thermo-Mechanical Controlled Process (TMCP)

Related Standards

This material data has been provided by ASTM.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

Ashby charts

Properties

Mechanical

PropertyTemperatureValueComment

Charpy impact energy, V-notch

-23 °C

48

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average

Elongation

13.0 - 15.0 %

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Tensile strength

620 MPa

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min.

Chemical properties

PropertyValueComment

Aluminium

0.02 %

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min, total

Boron

0.002

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max.

Carbon

0.16

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max.

Chromium

0.4

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max.

Copper

0.35000000000000003

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max.

Manganese

1.0 - 2.0 %

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Molybdenum

0.4

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max.

Nickel

0.7000000000000001

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max.

Niobium

0.1

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max.

Phosphorus

0.03

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max.

Silicon

0.15 - 0.5 %

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Sulfur

0.02

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max.

Vanadium

0.09

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max.

Technological properties

Property
Processing methods

The TMCP method consists of rolling reductions and cooling rate controls that result in mechanical properties in the finished plate that are equivalent to those attained using conventional rolling and heat treatment processes, which entail reheating after rolling.