Forged Steel Bars & Blocks – Monoblock Supply up to Ø1380 mm
Saf Steel Group supplies monoblock forged steel bars and blocks for heavy-duty industrial applications where strength, internal integrity, and reliability are essential.
Our forged steel stock covers diameters from Ø90 mm up to Ø1380 mm, with cut-to-length capability up to Ø1350 mm, enabling fast and flexible supply for both standard and project-based requirements.
Steel Grades & Material Scope
Our forged steel grades are consistent with our rolled steel product range, ensuring material continuity across applications. Available steel classes include:
Case hardening (cementation) steels
Carbon steels
Quenched & tempered (heat-treatable) alloy steels
These materials are suitable for components requiring high strength, controlled hardness, and long service life.
Customization & Supply Options
We support customized solutions based on customer requirements, including:
Diameter and length customization
Grade selection according to application needs
Project-specific forging and cutting
Preparation for machining and further processing
Saf Steel Group delivers forged steel solutions with a focus on dimensional accuracy, metallurgical consistency, and dependable performance.
CARBON STEELS
AISI 1010 · 1020 · 1030
AISI 1010, AISI 1020, and AISI 1030 carbon steel round bars are low to medium carbon forged steel grades widely used in general engineering and mechanical applications. They offer good toughness, excellent machinability, and stable mechanical performance.
AISI 1010 provides high ductility and formability, AISI 1020 offers a balanced combination of strength and toughness, while AISI 1030 delivers higher strength and improved wear resistance. These steels are commonly supplied in forged or hot rolled condition and used in shafts, pins, machine parts, and structural components.
At SAF Steel Group, these carbon steel grades are supplied in forged and rolled conditions, with controlled quality, precise dimensions, and EN 10204 3.1 certification, serving customers who require performance-driven special steels.
AISI 1060 (C60) · AISI 1070 (C70) · AISI 1090
AISI 1060 (C60), AISI 1070 (C70), and AISI 1090 are high carbon steel grades known for their high hardness, excellent wear resistance, and superior strength after heat treatment, making them ideal for demanding industrial applications.
AISI 1060 (C60) offers a balanced combination of strength and toughness and is commonly used in springs, wear parts, and high-strength mechanical components.
AISI 1070 (C70) provides higher carbon content, resulting in increased hardness and wear resistance, suitable for applications subjected to higher stress and repetitive loading.
AISI 1090, with its very high carbon level, delivers maximum hardness and abrasion resistance, preferred for cutting tools, blades, and heavy-duty wear components.
At SAF Steel Group, these high carbon steel grades are supplied in forged and rolled conditions, with controlled quality, precise dimensions, and EN 10204 3.1 certification, serving customers who require performance-driven special steels.
AISI 1040 · AISI 1045 · AISI 1050
AISI 1040, AISI 1045, and AISI 1050 carbon steel round bars are medium carbon forged steel grades used in applications requiring higher strength, hardness, and wear resistance compared to low carbon steels. They provide reliable mechanical performance and good response to heat treatment.
AISI 1040 offers balanced strength and toughness, AISI 1045 delivers higher tensile strength and improved machinability, while AISI 1050 provides increased hardness and wear resistance. These steels are commonly supplied in forged, hot rolled, or heat-treated condition and used in shafts, gears, axles, and heavy-duty machine components.
At SAF Steel Group, these carbon steel grades are supplied in forged and rolled conditions, with controlled quality, precise dimensions, and EN 10204 3.1 certification, serving customers who require performance-driven special steels.
ST50-2 · ST52-3 · S355 · S355JH · S355J3G3
ST50-2, ST52-3, S355, S355JH, and S355J3G3 are high-strength structural steel grades commonly supplied in forged steel form for applications requiring enhanced mechanical performance, reliability, and structural integrity.
ST50-2 and ST52-3 are traditional structural steel grades offering higher strength than basic carbon steels, widely used in heavy machinery and load-bearing components.
S355 provides a minimum yield strength of 355 MPa, making it a preferred choice for demanding structural and mechanical applications.
S355JH is specifically designed for hollow sections and pressure-related structural uses, offering consistent toughness and strength.
S355J3G3 delivers improved impact resistance at low temperatures, suitable for critical forged components exposed to dynamic loads.
At SAF Steel Group, these grades are supplied as forged round bars and monoblock forged components, with controlled forging processes, precise dimensions, and EN 10204 3.1 certification, meeting European industrial standards.
QUENCHED & TEMPERED (Q&T)
38Cr4 (AISI 5135) · 41Cr4 (AISI 5140)
38Cr4 (AISI 5135) and 41Cr4 (AISI 5140) are chromium alloy heat treatable steel grades commonly used as steel round bars in mechanical engineering applications. Both grades offer good strength, toughness, and wear resistance after quenching and tempering.
41Cr4 contains slightly higher carbon content, providing marginally higher strength compared to 38Cr4, while both grades are considered closely related and often interchangeable depending on design requirements. They are typically supplied in hot rolled or heat treated condition and used in shafts, gears, axles, pins, and machine components.
AISI 4130 (34CrMo4) · AISI 4140 (42CrMo4)
AISI 4130 and AISI 4140 (42CrMo4) are chromium-molybdenum heat treatable steel grades widely used as steel round bars in demanding mechanical applications. These grades provide high strength, good toughness, and excellent hardenability after quenching and tempering.
AISI 4130 offers lower carbon content and better weldability, while AISI 4140 (42CrMo4) provides higher strength and wear resistance, making them suitable for different load requirements. They are typically supplied in hot rolled or heat treated condition and used in shafts, gears, axles, bolts, pins, and heavy-duty machine components.
AISI 4150 (50CrMo4) · AISI 8640 (39NiCrMo3)
AISI 4150 and AISI 8640 alloy steel round bars are high-strength heat treatable alloy steel grades used in demanding mechanical and industrial applications. They offer high tensile strength, good fatigue resistance, and reliable performance after quenching and tempering.
AISI 4150 provides higher hardness, while AISI 8640 offers improved toughness due to nickel alloying. These steels are commonly supplied in hot rolled or quenched and tempered condition and used in shafts, gears, axles, and heavy-duty machine components.
AISI 4130 · AISI 4140 · AISI 4150 (QT – Quenched & Tempered)
AISI 4130, 4140, and 4150 are chromium-molybdenum alloy steels supplied in quenched and tempered (QT) condition, offering high strength, good toughness, and reliable performance under dynamic and heavy loading conditions. Heat treatment significantly enhances their mechanical properties, making them suitable for demanding engineering applications.
AISI 4130 (QT) provides good toughness and weldability with moderate strength, AISI 4140 (QT) offers an excellent balance of strength, toughness, and fatigue resistance, while AISI 4150 (QT) delivers higher hardness and load-carrying capacity for more severe service conditions. These grades are widely used in shafts, gears, axles, bolts, and heavy-duty machine components where consistent mechanical performance is critical.
At SAF Steel Group, AISI 4130 · 4140 · 4150 steels are supplied in quenched and tempered condition, with controlled mechanical properties, precise dimensions, and EN 10204 3.1 certification, meeting the requirements of performance-driven industrial applications.
30CrNiMo8 QT · 36CrNiMo16
30CrNiMo8 QT and 36CrNiMo16 are high-performance nickel-chromium-molybdenum alloy steels, widely supplied in forged condition for applications requiring exceptional strength, toughness, and fatigue resistance.
30CrNiMo8 QT offers an excellent balance of high tensile strength and toughness after quenching and tempering, making it ideal for shafts, gears, axles, and heavy mechanical components.
36CrNiMo16, with higher alloy content, provides superior hardenability and impact resistance, even in large cross-sections, and is commonly used for critical forged parts in energy, offshore, heavy machinery, and power transmission applications.
At SAF Steel Group, these grades are supplied as forged round bars and monoblock forgings, produced with controlled forging processes and delivered with EN 10204 3.1 certification, meeting the highest European industrial standards.
34CrNiMo6 (AISI 4340) · 36CrNiMo4
34CrNiMo6 (AISI 4340) and 36CrNiMo4 are nickel-chromium-molybdenum alloy steels widely supplied in forged condition for applications requiring exceptional strength, toughness, and fatigue resistance.
34CrNiMo6 (AISI 4340) offers outstanding hardenability and impact toughness, even in large cross-sections, making it a preferred choice for critical forged components such as shafts, gears, axles, and power transmission parts.
36CrNiMo4 provides high mechanical strength and good toughness after heat treatment and is commonly used for heavy-duty mechanical and structural forged parts operating under dynamic and high-load conditions.
At SAF Steel Group, these grades are supplied as forged round bars and monoblock forgings, produced under controlled processes and delivered with EN 10204 3.1 certification, meeting strict European industrial requirements.
CARBURIZING STEELS
25CrMo4 (AISI 4120) · 21NiCrMo2 (AISI 8620)
25CrMo4 (AISI 4120) and 21NiCrMo2 (AISI 8620) are widely used alloy steels supplied in forged condition for applications requiring high strength, toughness, and excellent heat treatment performance.
25CrMo4 (AISI 4120) is a chromium-molybdenum alloy steel offering good hardenability and mechanical strength after quenching and tempering. It is commonly used for shafts, gears, bolts, and forged mechanical components in machinery and automotive applications.
21NiCrMo2 (AISI 8620) is a nickel-chromium-molybdenum case hardening steel, well known for its excellent core toughness and superior surface hardness after carburizing. It is widely preferred for gears, pinions, transmission parts, and high-performance forged components.
At SAF Steel Group, these grades are supplied as forged round bars and monoblock forgings, with controlled processing, dimensional accuracy, and EN 10204 3.1 certification, meeting demanding European industrial requirements.
15NiCr6 (AISI 3115) · 14NiCr14 (AISI 3315) · 14NiCr18 (AISI 3415)
15NiCr6, 14NiCr14, and 14NiCr18 are nickel-chromium alloy case hardening steel grades widely used in applications requiring a hard, wear-resistant surface combined with a tough and ductile core. These steels are specifically designed for carburizing and heat treatment.
15NiCr6 offers good core toughness and surface hardness, 14NiCr14 provides improved strength with balanced hardenability, while 14NiCr18 delivers enhanced toughness and fatigue resistance due to its higher nickel content. These grades are commonly supplied in forged or hot rolled condition and used in gears, shafts, pinions, and heavily loaded transmission components.
At SAF Steel Group, these alloy steel grades are supplied in forged and rolled conditions, with controlled quality, precise dimensions, and EN 10204 3.1 certification, serving customers who require performance-driven special steels
17CrNiMo6 · 18NiCrMo5 · 18CrNiMo7-6
17CrNiMo6, 18NiCrMo5, and 18CrNiMo7-6 are nickel-chromium-molybdenum alloy case hardening steel grades developed for highly loaded mechanical components requiring high surface hardness, excellent core toughness, and superior fatigue strength. These steels are specifically engineered for carburizing, quenching, and tempering.
17CrNiMo6 offers a good balance of hardenability and toughness, 18NiCrMo5 provides improved fatigue resistance and dimensional stability after heat treatment, while 18CrNiMo7-6 delivers higher core strength and load-carrying capacity, making it suitable for the most demanding applications. These grades are commonly supplied in forged or hot rolled condition and used in heavy-duty gears, shafts, pinions, and transmission components.
At SAF Steel Group, all these grades are available from stock in peeled (turned) condition, with EN 10204 3.1 certification and EN 10228-3 UT Class 3 or Class 4 guaranteed, ensuring high internal quality and reliability for critical applications.
BEARING STEEL
100Cr6 (AISI 52100) Forged Bearing Steel Supplier
100Cr6 (AISI 52100) is a high carbon chromium bearing steel widely used in applications requiring high hardness, excellent wear resistance, and superior fatigue strength. When supplied in forged condition, it offers improved internal quality, refined grain structure, and enhanced reliability for critical components.
This grade provides excellent response to heat treatment, achieving high surface and core hardness after quenching and tempering. 100Cr6 forged steel is commonly used in bearing rings, rolling elements, shafts, and precision mechanical components where dimensional stability and long service life are essential.
At SAF Steel Group, 100Cr6 forged steel is supplied with controlled quality, precise dimensions, and EN 10204 3.1 certification, meeting the requirements of performance-driven bearing and mechanical applications.