HDT1180G1 - Hot rolled martensitic steel - European Steel Business Group

Quality	Standard	Material No.
HDT1180G1	DIN EN 10338	1.0965

Quality

Testing direction	Yield point R_p0,2 (MPa)	Tensil Strength R_m (MPa)	Elongation A₈₀ (in %)	_A5 (in %) ≥ 3 mm
L	900 – 1200	≥ 1180	≥ 4	≥ 5

Mechanical Properties

C %	Si %	Mn %	P %	S %	_Altotal %	Cr + Mo %	Nb + Ti %	V %	B %
≤ 0,25	≤ 0,80	≤ 2,50	≤ 0,060	≤ 0,015	0,015 – 2,0	≤ 1,20	≤ 0,25	≤ 0,22	≤ 0,005

Chemical properties

HDT1180G1: A martensitic steel for demanding applications

HDT1180G1 is a hot-rolled martensitic steel specified in accordance with the DIN EN 10338 standard. It is characterized by a unique combination of high strength, toughness and hardness, which makes it ideal for a wide range of demanding applications.

Properties and composition
HDT1180G1 has a typical carbon content of 0.8 to 1.2 %, a manganese content of 0.5 to 1.0 %, a silicon content of 0.2 to 0.6 % and a chromium content of 0.5 to 1.0 %. These alloying elements contribute to the outstanding properties of the steel.

Mechanical properties
The HDT1180G1 impresses with a tensile strength of min. 1180 MPa, a yield strength of min. 900 / max. 1200 MPa and an elongation at break of min. 4 or 5 %. The notched impact strength at room temperature is 40 J/cm². These values demonstrate the extreme strength and hardness of the steel, which make it suitable for the highest loads and dynamic stresses.

Processing
HDT1180G1 is relatively easy to form, weld and machine. The good weldability enables efficient and safe processing, which makes HDT1180G1 an economical material for complex constructions.

Applications
The HDT1180G1 is used in particularly demanding areas, including:

Toolmaking: cutting tools, punching tools, forming tools

Mechanical engineering: Highly stressed machine components, gear parts, axles

Vehicle construction: armored vehicles, commercial vehicles with high safety requirements

Aerospace: structural components, engine components

Advantages
The outstanding advantages of the HDT1180G1 include:

Extreme strength and hardness: Enables use in applications with the highest loads and dynamic stresses.

Low weight: Ideal for applications where weight savings play an important role.

Good weldability and workability: Efficient and safe processing for complex constructions.

Wear resistance: Enables use in applications with high mechanical stress.

Good low temperature behavior: Retains its properties even at extreme sub-zero temperatures.

Disadvantages
In addition to its numerous advantages, the HDT1180G1 also has a few disadvantages:

Higher price than unalloyed steels: The manufacturing costs are significantly higher due to the complex alloy.

Poor market availability

Susceptibility to corrosion: Without sufficient coating, the steel can corrode.

Difficult machining: Machining the steel requires special tools and specialist knowledge.

Summary
HDT1180G1 is a martensitic steel with exceptional properties that impresses engineers and designers in a wide range of industries with its extreme strength, hardness, toughness, wear resistance and good low-temperature behavior.
Its limited range of applications and the associated challenges in processing and coating require careful consideration of the specific requirements and operating conditions when selecting this material.