Saf Steel Group offers a comprehensive range of high-performance steel solutions engineered to meet the most demanding industrial requirements.
Our product portfolio includes hot-rolled and precision cold-drawn bars, available in round and hexagonal forms, delivering superior surface quality and tight dimensional tolerances for critical applications.
To ensure optimum mechanical performance, materials are supplied in QT (Quenched & Tempered) condition, combining high hardness with exceptional toughness and long-term reliability.
Our ready-to-ship stock covers a wide selection of grades, including ST37, ST52, 1020, 1040, 1050, 1060, 4140, and 5140, available in sizes ranging from 5 mm up to 1000 mm, enabling fast response to diverse engineering needs without compromising on quality
CARBON STEELS
AISI 1010 · AISI 1020 · AISI 1030
Cold Drawn Flat Bars
AISI 1010, AISI 1020, and AISI 1030 are low to medium carbon steel grades widely used in general engineering and precision machining applications. In cold drawn condition, these steels offer tight tolerances, smooth surface finish, and improved dimensional accuracy.
AISI 1010 provides excellent formability, AISI 1020 offers balanced strength and machinability, while AISI 1030 delivers higher mechanical strength within the carbon steel range.
At SAF Steel Group, these grades are available ex-stock as cold drawn flat bars (lama) and square bars (kare), all supplied with EN 10204 3.1 certification in compliance with European standards.
AISI 1040 · AISI 1045 · AISI 1050 Hot Rolled Flat Bars
AISI 1040, AISI 1045, and AISI 1050 are medium carbon steel grades widely used in mechanical and industrial applications requiring higher strength and wear resistance. Supplied in hot rolled condition, these grades offer good machinability, solid mechanical performance, and cost-effective processing.
As the carbon content increases, AISI 1040 provides balanced strength and toughness, AISI 1045 offers improved hardness and durability, while AISI 1050 delivers higher strength for more demanding applications.
At SAF Steel Group, these grades are available as hot rolled flat bars (lama), supplied with EN 10204 3.1 certification, meeting European quality standards.
AISI 1060 (C60) · 1070 (C70) · 1090
AISI 1060 (C60), AISI 1070 (C70), and AISI 1090 are high carbon steel grades used in applications requiring high hardness, wear resistance, and strength. Supplied in hot rolled condition, these steels provide reliable performance for demanding mechanical applications.
AISI 1060 (C60) offers a strong balance of hardness and toughness, AISI 1070 (C70) provides increased strength and wear resistance, while AISI 1090 delivers maximum hardness within this group.
At SAF Steel Group, these grades are supplied as hot rolled flat bars (lama) with EN 10204 3.1 certification, fully compliant with European standards.
ST37 · S235
ST37 and S235 are low carbon structural steel grades commonly used in construction and general fabrication applications. Supplied in hot rolled condition, these steels offer good weldability, easy forming, and reliable mechanical performance.
S235 is the European standard equivalent of ST37, ensuring compliance with EN standards for structural steel applications.
At SAF Steel Group, ST37 / S235 grades are available as hot rolled flat bars and square bars, supplied with EN 10204 3.1 certification in line with European requirements.
S355 (S355J0 · S355J2)
S355J0 and S355J2 are structural steel grades widely used in construction and general engineering applications requiring high strength, good toughness, and reliable weldability. Supplied in hot rolled condition, these steels offer consistent mechanical performance for heavy-duty applications.
S355J0 is impact tested at 0 °C, while S355J2 is impact tested at –20 °C, making S355J2 more suitable for low-temperature and demanding environments.
At SAF Steel Group, S355 grades are available as hot rolled flat bars and square bars, supplied with EN 10204 3.1 certification in full compliance with European standards.
ST60 · ST70
ST60 and ST70 are high-strength carbon steel grades used in structural and mechanical applications requiring higher tensile strength and load-bearing capacity. Supplied in hot rolled condition, these steels offer good machinability, solid toughness, and reliable performance.
ST60 provides increased strength compared to standard structural steels, while ST70 delivers even higher mechanical strength for more demanding applications.
At SAF Steel Group, ST60 and ST70 are available as hot rolled flat bars and square bars, supplied with EN 10204 3.1 certification, meeting European quality expectations.
38Cr4 (AISI 5135) · 41Cr4 (AISI 5140)
38Cr4 (AISI 5135) and 41Cr4 (AISI 5140) are chromium alloy steel grades commonly used in mechanical and engineering applications requiring improved strength, toughness, and wear resistance.
38Cr4 offers good hardenability and machinability, while 41Cr4 provides higher strength and fatigue resistance for more demanding applications. These grades are suitable for shafts, gears, and high-stress mechanical components.
At SAF Steel Group, these alloy steel grades are supplied upon request and typically offered based on project-specific size and specification requirements, in compliance with European quality standards and EN 10204 3.1 certification.
QUENCHED & TEMPERED
AISI 4130 (34CrMo4) · AISI 4140 (42CrMo4)
Alloy Steel Flat & Square Bars
AISI 4130 (34CrMo4) and AISI 4140 (42CrMo4) are chromium-molybdenum alloy steel grades widely used in mechanical and engineering applications requiring high strength, toughness, and fatigue resistance.
AISI 4140 (42CrMo4) is a core grade in our stock program, available in both hot rolled and forged condition as flat and square bars, covering a wide size and section range. It offers excellent hardenability, high mechanical strength, and reliable performance for demanding applications such as shafts, gears, and heavy-duty components.
AISI 4130 (34CrMo4) is typically supplied upon request, depending on project-specific size and specification requirements.
At SAF Steel Group, alloy steel flat and square bars are supplied with EN 10204 3.1 certification, fully compliant with European standards.
AISI 4150 (50CrMo4) · AISI 8640 (39NiCrMo3)
AISI 4150 (50CrMo4) and AISI 8640 (39NiCrMo3) are high-performance alloy steel grades used in mechanical and heavy-duty applications requiring high strength, toughness, and excellent fatigue resistance.
AISI 4150 (50CrMo4) offers higher carbon content than standard CrMo steels, providing increased hardness and wear resistance.
AISI 8640 (39NiCrMo3) combines chromium, nickel, and molybdenum for superior toughness and strength in highly stressed components.
At SAF Steel Group, these alloy steel grades are supplied based on availability and project requirements, delivered as flat and square bars with EN 10204 3.1 certification, fully compliant with European standards.
34CrNiMo6 (1.6582 / AISI 4340) · 36CrNiMo4 (1.6511)High-Strength Alloy Steel Flat & Square Bars
34CrNiMo6 (material no. 1.6582, equivalent to AISI 4340) and 36CrNiMo4 (material no. 1.6511) are high-performance nickel-chromium-molybdenum alloy steel grades designed for applications requiring very high strength, toughness, and fatigue resistance.
34CrNiMo6 / AISI 4340 (1.6582) is characterized by excellent hardenability and outstanding mechanical properties after heat treatment, making it suitable for heavily loaded components such as drive shafts, gears, crankshafts, and critical mechanical parts.
36CrNiMo4 (1.6511) offers a balanced combination of strength and toughness, with good machinability and reliable performance in demanding engineering applications.
At SAF Steel Group, these alloy steel grades are supplied as flat and square bars, delivered according to project-specific requirements and supported by EN 10204 3.1 certification, ensuring full traceability and compliance with European quality standards.
30CrNiMo8 QT (1.6580) · 36CrNiMo16 (1.6773)
High-Strength Alloy Steel Flat & Square Bars
30CrNiMo8 QT (material no. 1.6580) and 36CrNiMo16 (material no. 1.6773) are premium nickel-chromium-molybdenum alloy steel grades developed for applications requiring very high strength, excellent toughness, and superior fatigue resistance, particularly under dynamic and cyclic loading conditions.
30CrNiMo8 QT (1.6580) is supplied in quenched and tempered (QT) condition, providing high yield strength, good impact toughness, and reliable dimensional stability. It is widely used for highly stressed components such as shafts, gears, spindles, and structural mechanical parts.
36CrNiMo16 (1.6773) is designed for extreme duty applications, offering outstanding hardenability, deep through-hardening capability, and excellent performance in large cross-sections where high core strength is critical.
At SAF Steel Group, these high-strength alloy steel grades are supplied as flat and square bars, delivered based on project-specific size and technical requirements, and supported by EN 10204 3.1 certification, ensuring full traceability and compliance with European standards.
CARBURIZING STEELS
C15 · Ck15 (1.0401)
C15 and Ck15 (material no. 1.0401) are low carbon steel grades commonly used in general engineering applications where good machinability, uniform mechanical properties, and reliable surface quality are required.
C15 is typically supplied for applications not requiring strict control of chemical composition, while Ck15 is produced with tighter chemical limits, making it suitable for components requiring more consistent performance and improved surface finish.
At SAF Steel Group, C15 / Ck15 carbon steel grades are supplied as flat and square bars, delivered according to project-specific requirements and supported by EN 10204 3.1 certification, ensuring compliance with European quality standards.
16MnCr5 (1.7131) · 20MnCr5 (1.7147)
Case Hardening Steel Flat, Square & Hexagon Bars
16MnCr5 (material no. 1.7131) and 20MnCr5 (material no. 1.7147) are manganese-chromium case hardening steel grades widely used in applications requiring a hard, wear-resistant surface combined with a tough core.
16MnCr5 offers excellent machinability and consistent carburizing behavior, making it suitable for precision components.
20MnCr5 provides slightly higher core strength due to its increased carbon content, ensuring improved load-bearing capacity after heat treatment.
These grades are commonly used for gears, shafts, pinions, bushings, and transmission components.
At SAF Steel Group, 16MnCr5 and 20MnCr5 are supplied as flat, square, and hexagon bars, with EN 10204 3.1 certification in line with European standards.
25CrMo4 (1.7218 / AISI 4120)
21NiCrMo2 (1.6523 / AISI 8620)
25CrMo4 (material no. 1.7218, equivalent to AISI 4120) and 21NiCrMo2 (material no. 1.6523, equivalent to AISI 8620) are alloy steel grades widely used in mechanical engineering applications requiring good hardenability, strength, and reliable toughness.
25CrMo4 provides balanced mechanical properties and good fatigue resistance, making it suitable for shafts and structural mechanical components. 21NiCrMo2 is a nickel-chromium-molybdenum case hardening steel, offering excellent core toughness combined with high surface hardness after carburizing, ideal for gears and transmission parts.
At SAF Steel Group, 25CrMo4 and 21NiCrMo2 are supplied as flat, square, and hexagon bars, with EN 10204 3.1 certification, in line with European standard
15NiCr6 (AISI 3115) ·· 14NiCr14 (AISI 3315) · 14NiCr18 (AISI 3415)
Case Hardening Steel Flat, Square & Hexagon Bars
15NiCr6, 14NiCr14, and 14NiCr18 are nickel-chromium alloy case hardening steel grades used in applications requiring a hard, wear-resistant surface and a tough core after carburizing and heat treatment.
15NiCr6 offers good machinability and balanced mechanical properties. 14NiCr14 provides improved core toughness and fatigue strength due to higher nickel content, while 14NiCr18 delivers enhanced hardenability and wear resistance for heavy-duty components.
These grades are commonly used for gears, shafts, pinions, and transmission parts.
At SAF Steel Group, these steels are supplied as flat, square, and hexagon bars, with EN 10204 3.1 certification in accordance with European standards.
17CrNiMo6 · 18NiCrMo5 · 18CrNiMo7-6
Case Hardening Steel Flat, Square & Hexagon Bars
17CrNiMo6, 18NiCrMo5, and 18CrNiMo7-6 are high-performance nickel-chromium-molybdenum case hardening steels developed for heavy-duty and high-load applications requiring excellent surface hardness and outstanding core strength.
These grades provide superior hardenability, fatigue resistance, and wear performance after carburizing and heat treatment, making them ideal for demanding mechanical components.
They are widely used for gears, shafts, pinions, gearbox parts, and transmission components in automotive, industrial, and heavy machinery applications.
At SAF Steel Group, these steels are supplied as flat, square, and hexagon bars, with EN 10204 3.1 certification, fully compliant with European quality standards.
FREE-CUTTING STEELS
DIN 9 S20 · DIN 9 SMn28 · DIN 9 SMn36 · DIN 9 SMnPb36 · SAE 1117
DIN 9 S20, SMn28, SMn36, SMnPb36, and SAE 1117 are free cutting steel grades designed for excellent machinability, clean chip formation, and high productivity in automatic and CNC machining.
SMn grades offer improved machinability through increased manganese content, while SMnPb36, with added lead, provides superior tool life for high-speed production. SAE 1117 delivers consistent performance for mass-produced components.
These steels are commonly used for machined parts, fasteners, fittings, bushings, and turned components.
At SAF Steel Group, they are supplied as flat, square, and hexagon bars, with EN 10204 3.1 certification, compliant with European standards.
DIN 9 SMnPb36 · DIN 35 SPb20
DIN 9 SMnPb36 and DIN 35 SPb20 are lead-alloyed free cutting steel grades specifically developed for high-speed and high-precision machining applications.
SMnPb36 offers excellent chip breaking and reduced tool wear, making it ideal for automatic lathes and CNC machining. SPb20 provides superior machinability with stable cutting behavior, ensuring high productivity and consistent surface quality.
These grades are widely used for turned parts, fittings, fasteners, bushings, and mass-produced mechanical components.
At SAF Steel Group, SMnPb36 and SPb20 are supplied as flat, square, and hexagon bars, with EN 10204 3.1 certification, in accordance with European standards.
DIN 10 S20 · DIN 35 S20 · DIN 60 S20 · SAE 1137
DIN 10 S20, DIN 35 S20, DIN 60 S20, and SAE 1137 are free cutting steel grades developed for applications requiring good machinability, stable cutting performance, and cost-efficient production in automatic and CNC machining.
These steels provide reliable chip control and consistent material properties, making them suitable for turned parts, fittings, fasteners, bushings, and general machined components where dimensional accuracy is required.
At SAF Steel Group, these grades are supplied as flat, square, and hexagon bars, with EN 10204 3.1 certification, fully compliant with European quality standards.
SPRING STEEL
55Si7 · 60SiCr7 · SAE 5160 · SAE 9260
Spring Steel Flat, Square & Hexagon Bars
5Si7, 60SiCr7, SAE 5160, and SAE 9260 are spring steel grades developed for applications requiring high elasticity, excellent fatigue resistance, and reliable strength under cyclic loading.
These steels are characterized by their silicon-based alloying, which significantly improves elastic limit and resilience. 55Si7 provides good flexibility and fatigue performance for general spring applications, while 60SiCr7, with added chromium, offers enhanced hardenability and wear resistance for more demanding conditions.
SAE 5160 is a widely used chromium spring steel known for its balanced toughness and strength, making it suitable for heavy-duty springs and mechanical components. SAE 9260, with higher silicon content, delivers superior elasticity and fatigue life, ideal for high-stress spring systems.
These grades are commonly used for:
Leaf and coil springs
Suspension components
Torsion bars
Automotive and industrial spring applications
At SAF Steel Group, these spring steels are supplied as flat, square, and hexagon bars, suitable for heat treatment and forming operations. All materials are delivered with EN 10204 3.1 certification, ensuring full traceability and compliance with European quality standards.
51CrV4 · 52CrMoV4 · 50CrV4
Spring Steel Flat, Square & Hexagon Bars
51CrV4, 52CrMoV4, and 50CrV4 are high-performance chromium-vanadium spring steel grades designed for applications requiring high strength, excellent fatigue resistance, and stable mechanical performance under dynamic loads.
51CrV4 is one of the most widely used spring steels in Europe, offering a strong balance between elasticity, toughness, and fatigue life. It performs reliably after heat treatment, making it suitable for demanding spring applications.
50CrV4 provides similar elastic and fatigue properties with slightly lower alloy content, making it a cost-effective solution for medium-duty spring and mechanical components.
52CrMoV4, alloyed with chromium, molybdenum, and vanadium, delivers superior hardenability, thermal stability, and fatigue resistance. It is especially preferred for heavy-duty and high-stress applications where long service life is critical.
These grades are commonly used for:
Leaf, coil, and torsion springs
Suspension and chassis components
Heavy-duty automotive and industrial springs
Mechanical parts subjected to cyclic stress
At SAF Steel Group, these spring steels are supplied as flat, square, and hexagon bars, suitable for forming and heat treatment processes. All materials are delivered with EN 10204 3.1 certification, fully compliant with European quality standards.
