Quality	Standard	Material No.	Old designation
DD14	DIN EN 10111	1.0389	StW 24 W

Testing direction	Yield strength ReL (MPa) 1 ≤ 2 mm	ReL (MPa) 2 ≤ 11 mm	Tensile strength Rm (MPa)	Elongation A80 (in %) 1 ‘ 1.5 mm	A80 (in %) 1.5 ≤ 2 mm	A80 (in %) 2 ≤ 3 mm	A5 (in %) 3 ≤ 11 mm
Q	170 – 310	170 – 290	≤380	30	31	32	36

Steel is one of the most fundamental building blocks of our modern world. Its versatility and strength make it an indispensable material in a wide range of applications, from construction to the manufacture of vehicles and machinery. Among the different types of steel, hot rolled steel holds a special place, and within this category, DD14 is a notable variant. In this article, we will explore the fascinating world of hot rolled steel, specifically DD14.

What is hot-rolled steel?
Hot rolled steel is a form of steel that is produced by a process called hot rolling. This process involves heating the steel to high temperatures – typically over 1000 degrees Celsius – and then rolling the heated material to the desired thickness and shape. Unlike cold-rolled steel, which is processed at room temperature, hot-rolled steel retains its plastic ductility, making it ideal for a variety of applications.

DD14: An introduction
DD14 is a specific variant of hot-rolled steel. It is part of the DIN EN 10111 standard, which specifies the requirements for continuous hot-rolled steel. DD14 is characterized by its excellent weldability and formability, which makes it a preferred material in the automotive industry and other industries where complex shapes and high strength are required.

Properties of DD14
DD14 has a number of properties that distinguish it from other steel variants. These include:

Applications of DD14
DD14 is used in a variety of applications, including: