Hungarian (MSZ) Standards for Steel Materials
Abstract
The Hungarian MSZ standards for steel materials cover a wide range of steel types, including carbon and alloy steel plates and forgings used in boilers and pressure vessels, high-strength low-alloy steels, heat-treatable steels, and steel sheets and strips. The standards also specify the requirements for various types of steel pipes, including those for high-temperature service, general use, and special applications such as fire protection.
These standards are detailed in four volumes, which consist of formally approved MSZ classifications, guides, practices, specifications, test methods, terminology, and related materials. These volumes include proposals and specifications for the following groups of steels:
- Structural and Constructional Steels
- Tool Steels
- Stainless and Heat-Resisting Steels
- Steel with Special Physical Properties
For each standard, data is provided on the standard number, grade, chemical composition, mechanical properties (yield point, tensile strength, and notch toughness), steel type, manufacturing method, thickness of plate, heat treatment, and other relevant information.
Overview of MSZ Steel Standards
The MSZ standards cover a variety of steel grades and manufacturing methods, addressing both general and specialized needs across industries. These standards help ensure uniformity and high quality in steel used for a range of applications, from construction to high-tech machinery and heat-resistant components.
Group 1: Structural and Constructional Steels
This group covers a wide variety of steel materials used in construction, pressure vessels, and other structural applications.
Some key standards in this group include:
| Standard Number | Description |
| MSZ 17 | Seamless tubes with increased requirements |
| MSZ 23 | Metal sheet and strip |
| MSZ 29 | Seamless tubes for general use |
| MSZ 31 | Case hardening |
| MSZ 33.3019 | Mining chains (non magnetizable) |
| MSZ 33.3029 | Mining chains (high alloy) |
| MSZ 33.3031 | Free-cutting steels |
| MSZ 33.3035 | For sheet |
| MSZ 33.3036 | Steel for gas cylinders |
| MSZ 113 | Rivet steel |
| MSZ 273 | Galvanized steel wire for power lines |
| MSZ 339 | Hot rolled concrete steel |
| MSZ 382/2 | Straight bead welded sized tubes |
| MSZ 500 | Carbon steels |
| MSZ 520 | Wear resistant manganese steel |
| MSZ 982 | Cold formed concrete steels |
| MSZ 1741 | Steels for boilers and pressure vessels |
| MSZ 1749 | High-temperature castings |
| MSZ 1745 | High temperature steels for screws |
| MSZ 2295 | Steels for high-pressure hydrogenation vessels |
| MSZ 2570 | Rails |
| MSZ 2666 | Hot rolled spring steels |
| MSZ 2751 | Axle-trees for rail vehicles |
| MSZ 2752 | Raw tyres for rail vehicles |
| MSZ 2754 | Wheel bodies for rail vehicles |
| MSZ 2978/2 | Straight bead welded and cold formed tubes |
| MSZ 3156 | Drill tubes |
| MSZ 3741 | Spiral welded tubes with increased requirements |
| MSZ 3770 | Spiral welded tubes with special requirements |
| MSZ 4051 | Tubes with special requirements |
| MSZ 4213 | Low carbon cold rolled narrow strip |
| MSZ 4339 | Free-cutting steels |
| MSZ 4400 | Cryogenic steels |
| MSZ 4747 | High-temperature tubes |
| MSZ 5750 | Crain rails |
| MSZ 6251 | Steels for plastic cold deformation |
| MSZ 6259 | Patinable steels |
| MSZ 6280 | Weldable steels |
| MSZ 7262 | Flanged profiles |
| MSZ 8267 | Cryogenic castings |
| MSZ 8272 | Low alloy castings |
| MSZ 8273 | Wear resisting cast iron |
| MSZ 8276 | Carbon steel castings |
| MSZ 17779 | Nitriding steels |
| MSZ 17789 | Ball and roller bearing steels |
| MSZ 6447 | Filler rod for submerged arc welding |
| MSZ 6448 | Filler rod for shielded arc welding |
Group 2: Tool Steels
This group specifies standards for various tool steels, essential for high-strength applications, including cutting, forming, and pressing tools.
Key standards include:
| Standard Number | Description |
| MSZ 4351 | High-speed steels |
| MSZ 4352 | Alloy tool steels |
| MSZ 4354 | Carbon tool steels |
| MSZ 33.3011 | Alloyed tool steels |
| MSZ 33.3012 | Alloyed tool steels |
| MSZ 33.3015 | Steel for mandrels for tubes |
| MSZ 33.3016 | Steel for highly stressed mandrels for tubes |
Group 3: Stainless and Heat-Resisting Steels
Stainless steels and heat-resisting steels are commonly used in industries that require resistance to high temperatures and corrosion.
Relevant standards include:
| Standard Number | Description |
| MSZ 4357 | Heat-resisting steel castings |
| MSZ 4359 | Heat-resisting steels |
| MSZ 4360 | Stainless steels |
| MSZ 5776 | Valve steels |
| MSZ 21053 | Stainless steel castings |
Group 4: Steels with Special Physical Properties
This group covers steels designed to have special properties for specific applications.
These standards include:
| Standard Number | Description |
| MSZ 8273 | Wear resisting cast iron |
| MSZ 8625 | Iron of high degree of purity |
| MSZ 8628 | Soft iron |
| MSZ 13722/1 | Iron-nickel alloys |
| MSZ 13723/1 | Alloys for the amalgamation with glass and ceramics |
| MSZ 13724/1 | Vacuum iron strip |
| MSZ 13725 | Soft magnetic strip of Ni-Fe alloys |
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