Description: BBN steel is a well-known steel manufacturer and service provider in China, EN10083-3 50CrMo4 Alloy Steel Plate is our superior product, we are favored by customers with high quality, competitive price and excellent service
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EN 10083-3 50CrMo4 Alloy Steel Plate, Round Bar & Forgings | Heat-Treatable, Quenched & Tempered
Premium Heat-Treatable Alloy Structural Steel | Material No. 1.7228 | High Hardness & Wear Resistance | Strong Bending & Torsion Resistance | MTC & Full Inspection Reports
High Hardness50CrMo4 delivers high surface hardness after heat treatment with excellent wear resistance for severe dynamic and abrasive loads.
Mo-Enhanced StabilityCompared with molybdenum-free 50H, the Mo addition improves hardenability, high-temperature strength and structural stability.
Heavy-Duty GradeWidely used for crankshafts, gears, axles and fasteners under bending, torsion and abrasion in automotive and machinery.
01Product Overview & Specifications
EN 10083-3 50CrMo4 is a premium quenched and tempered alloy structural steel belonging to the high-performance heat-treatable grades. Compared with the similar grade 50H, 50CrMo4 adds molybdenum, delivering far better hardness, wear resistance and structural stability under extreme loads.
With reliable anti-bending, anti-twisting, anti-abrasion and high-load resistance, 50CrMo4 is engineered for high-strength vehicle and mechanical components that withstand severe dynamic loads. It offers stable hardenability and excellent mechanical uniformity after heat treatment, supplied as plates, round bars, flat bars, forgings and profiles.
Item
Specification
Executive Standard
EN 10083-3 Heat-treatable steels — technical delivery conditions for alloy steels
Mill Test Certificate (MTC), EN 10204 3.1 / 3.2 full inspection reports
Processing Services
Customized cutting, heat treatment, machining and complete certification documents
02Equivalent International Steel Grades
50CrMo4 (1.7228) has complete equivalent grades in major international standard systems, featuring consistent chemical composition, hardenability, wear resistance and mechanical properties for seamless cross-standard substitution.
Standard System
Equivalent Grade
EN 10083-3 (EU)
50CrMo41.7228
ASTM / AISI (USA)
4150
JIS (Japan)
SCM445
GB (China)
50CrMo
BS (UK)
708A50
AFNOR (France)
50CD4
Note: Equivalent grades share the 0.50% C / Cr-Mo alloying concept and comparable hardenability, yet differ in impurity limits, testing and certification. For design-critical applications, verify detailed specifications before substitution. BBN technical team can assist with grade matching.
03Grade Designation & Meaning
The DIN / EN designation 50CrMo4 encodes the carbon level, alloying elements and grade index of this heat-treatable steel.
50
50 — Carbon Content
Indicates a mean carbon content of approximately 0.50% (100 × C%) for high hardness after hardening.
Cr
Cr — Chromium
Chromium improves hardenability, hardness and wear resistance of the heat-treated steel.
Mo
Mo — Molybdenum
Molybdenum raises high-temperature strength, hardenability and structural stability; absent in the 50H grade.
4
4 — Grade Index
Sequence / quality index within the DIN heat-treatable steel family, distinguishing it from other Cr-Mo grades.
50CrMo4 vs 50H: Both are ~0.50% carbon heat-treatable steels, but 50H contains no molybdenum. The Mo addition gives 50CrMo4 markedly better hardenability, wear resistance and stability under extreme load, making it the preferred choice for severe dynamic-load components.
04Chemical Composition
Cast analysis limits of 50CrMo4 per EN 10083-3 (values in %, unless a range is given).
Element
Content (%)
C (Carbon)
0.46 – 0.54
Si (Silicon)
0.40 max
Mn (Manganese)
0.50 – 0.80
P (Phosphorus)
0.025 max
S (Sulfur)
0.035 max
Cr (Chromium)
0.90 – 1.20
Mo (Molybdenum)
0.15 – 0.30
Note: Values above are cast-analysis limits per EN 10083-3. Chromium and molybdenum provide the hardenability and high-temperature strength that distinguish 50CrMo4 from plain-carbon grades. The exact heat analysis of each batch is stated in its Mill Test Certificate (MTC).
05Mechanical Properties
Typical mechanical properties of 50CrMo4 in the quenched and tempered condition (reference values per EN 10083-3; actual results depend on section size and heat-treatment parameters).
182 MPaMin. Yield Rp0.2Quenched & tempered
769 MPaMin. Tensile RmQuenched & tempered
44 JImpact KV / KuCharpy, room temp
32%Elongation AMin. elongation
Mechanical properties of 50CrMo4:
Grade
Yield Rp0.2 (MPa, min)
Tensile Rm (MPa, min)
Impact (J)
Elongation A (%)
50CrMo4
182
769
44
32
Note: 50CrMo4 is a heat-treatable steel supplied in a soft condition; the mechanical values above are achieved after quenching and tempering and vary with section thickness and treatment. For your specific size and hardness requirement, we confirm properties in the MTC.
06Product Types, Processing & Service
BBN Steel supplies full-spec EN 10083-3 50CrMo4 alloy steel with stable quality, strictly compliant with standard chemical and mechanical requirements, ideal for high-strength and high-wear components.
1
Steel Plate
Hot-rolled plates 3–500 mm for heavy-duty structural and wear parts; customizable cutting and heat treatment.
2
Round / Flat Bar
Round and flat bars for shafts, axles and fasteners; uniform hardness after quench & temper.
3
Forgings & Profiles
Forged blocks and profiles for crankshafts, gears and high-load transmission parts.
1
Fast Delivery
Stock plates, bars and forgings with prompt delivery; flexible MOQ from 1 ton.
2
Custom Processing
Cutting, heat treatment and machining per your drawings and hardness requirements.
3
MTC & Inspection
EN 10204 3.1 / 3.2 full inspection reports for every order.
4
Tech Consultation
Grade matching and processing advice replied within 24 hours by email or phone.
Full-spec 50CrMo4 plates, bars, forgings in 3–500 mm thickness, 1000–4000 mm width
Heat-treatable Cr-Mo alloy steel, 1.7228, quenched & tempered for high hardness and wear resistance
Customized cutting, heat treatment and machining services
EN 10204 3.1 / 3.2 MTC, full inspection reports and complete certification
Get Your EN 10083-3 50CrMo4 Steel Quotation Now
Send us your product form (plate / bar / forging), dimensions (thickness × width × length or diameter), quantity, heat-treatment and hardness requirements. We will reply with stock status, competitive factory price, delivery time and complete certification within 24 hours.
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