42CrMo4 steel: round bars and plate blocks
Browse the filterable list of 42CrMo4 steel products - round bars and plate blocks - available in the forged, hot-rolled, cold-drawn, ground, peeled and hard chrome plated executions, and in the quenched and tempered condition.
0142CrMo4 steel supply
Siderticino supplies 42CrMo4 steel (material number 1.7225), a chromium-molybdenum alloy steel for quenching and tempering to EN ISO 683-2:2018 (formerly EN 10083-3), used for mechanical parts subjected to fatigue and torsion - transmission shafts, gears, pins, connecting rods, tie rods and components requiring high strength even in medium-to-large sections. Good hardenability, conferred by chromium and molybdenum, makes it the go-to grade when C45 does not ensure sufficient hardening depth.
The range includes bar and plate semi-finished products in the main production executions, with custom cutting, heat treatment and certification on request. The product list above can be filtered by execution, type, section and delivery condition; for an offer on a specific item, simply request a quote, stating the format and quantity.
02Available formats and executions
42CrMo4 is available as round bar and as plate block, in various executions. The items below correspond to the product list filters, where each item links to its detail page and to the quote request.
2.1Round bars
42CrMo4 bars are supplied as round bars, across the full range of executions (forged, hot-rolled, cold-drawn, peeled, ground, hard chrome plated). Round bar is the format of choice for producing shafts, pins, spindles, tie rods and transmission parts to be machined on machine tools.
2.2Plates and blocks
For applications requiring plate stock, plate blocks in 42CrMo4 are available in the hot-rolled execution, suitable for cutting plates, dies and machine bases. Shaping and cutting to the required size can be agreed at the time of order.
2.3Executions and surface finishes
Available executions meet different tolerance and finish requirements: forged and hot-rolled for semi-finished products to be machined and for large sections, cold-drawn and peeled for tighter dimensional tolerances and clean surfaces, ground for round bars requiring maximum dimensional precision, hard chrome plated for rods and sliding applications. The choice of execution affects downstream machining and should be assessed according to the final component.
0342CrMo4 delivery conditions
42CrMo4 is supplied mainly in the quenched and tempered (+QT) condition, ready for use in components requiring in-service mechanical properties. Other delivery conditions can also be handled depending on the required machinability or dimensional stability.
The optimal delivery condition is defined according to the planned machining and the required hardness, and can be specified at the quote stage; Siderticino technical support assists in choosing the option best suited to the component.
04Processing and certification services
In addition to material supply, Siderticino offers services on 42CrMo4 that reduce incoming machining operations and ensure batch traceability.
4.1Custom cutting
42CrMo4 bars can be supplied cut to the required length, reducing offcuts and shop-floor preparation time. Full details of the service are described on the custom steel cutting page.
4.2Third-party heat treatment
42CrMo4 can be supplied already quenched and tempered to the required mechanical condition, or the heat treatment can be managed on the ordered material. Nitriding and surface hardening can also be carried out on 42CrMo4, treatments consistent with its use on shafts and gears, without the customer having to arrange the treatment stage separately.
4.3EN 10204 certification
Every supply is accompanied by an EN 10204 type 2.1 declaration of compliance and, on request, by a type 3.1 inspection certificate, with traceability of the batch's chemical composition and mechanical properties. The 3.1 is the document required for orders where full material traceability is necessary.
05How to request a quote
For an offer on 42CrMo4, state the format (round bar, plate), execution, delivery condition, any cut to size and quantity: request a quote and the technical-sales office will check availability, delivery times and current price. To estimate the weight of the semi-finished products in advance, the steel bar weight calculator is available.
0642CrMo4 technical specifications
For material data - EN ISO 683-2:2018 (formerly EN 10083-3) chemical composition, mechanical properties in the quenched and tempered condition by size class, heat treatments, Jominy hardenability and international equivalents - see the complete 42CrMo4 technical specifications. For choosing between related grades, the 39NiCrMo3 and C45 datasheets may also be useful.