UGIMA® 4021/UGI® 4021

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In the treated state, a martensitic grade combining excellent mechanical properties with good corrosion resistance on suitably polished surfaces in moderately aggressive non-chlorinated environments. Good resistance in oxidizing atmosphere up to 600°C. UGIMA® grade produced according to an Ugitech process to significantly improve its machinability, up to diameter 115 mm.

Related Standards

Equivalent Materials

This material data has been provided by Ugitech SA.

"Typical" values were obtained via a literature search. "Predicted" values were imputed via artificial intelligence technology. While we have placed significant efforts in ensuring data accuracy, "typical" and "predicted" data should be considered indicative and verified by appropriate material testing. Please do contact us if additional information on the the predicted data method is required.
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


Chemical properties



0.2 %

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13.0 %

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Technological properties

Application areas

Mechanical engineering, oil and petrochemicals industry, food and food processing industry, decoration and household appliances, transport and cutlery: shafts, pistons, liners, valves, nuts and bolts, etc.

Corrosion properties

Atmospheres, fresh waters (check water analysis). Oxidizing saline solutions free of chlorides, fluorides, iodides, bromides, etc. Cold diluted nitric solutions. Certain cold diluted organic acids: picric, tannic, lactic, etc. Non-corrosive products such as: alcohol, benzol, petroleum, oil, soap, etc.

Heat Treatment

Tempering curves on the right side of the material page.

Tempering temperature: Indicative mechanical properties after quenching in oil at 950°C and tempering for 2 hours.


Available products:

BarRoundRolled and descaled bars12 to 1322 to 15 mm
RoundTurned and polished9 to 1122 to 115 mm
RoundDrawn bar8 to 93 to 55 mm
RoundGround bar6 to 93 to 80 mm
HexagonalDrawn bar113 to 55 mm
Wire rodRoundPickled5.0 to 32 mm
Drawn wireRound16.0 to 1.0 mm

Other products: contact the supplier