Compare sizes, steel grades, standards and supply options.
Hot-rolled steel round bar
EMRA Steel supports enquiries for smooth steel round bars used in fabrication and engineering. Unlike ribbed rebar, engineering round bars are specified by the material grade, diameter, delivery condition and properties required for the finished component.
Hot-rolled steel round bar: Size and weight portfolio
Geometric estimates exclude rolling tolerances, coatings and process losses; hollow and rolled-section references include their own section-table basis. Calculated bar weights use unrounded mass. Values are not measured shipment weights. Confirm length, grade, manufacturing route, packing and supply in the offer; the existing image illustrates the product family.
EMRA Steel supports enquiries for smooth steel round bars used in fabrication and engineering. Unlike ribbed rebar, engineering round bars are specified by the material grade, diameter, delivery condition and properties required for the finished component.Read more
Standards and applicability
EN 10060 covers hot-rolled round-bar dimensions and tolerances, not grade properties. Keep C45 and C45E distinct and confirm the complete CK45/CK60 legacy designation. Chemistry rows have separate reference bases: C45E to EN ISO 683-1, C60E to an explicitly dated EN 10083-2:2006 reference and 70Cr2 to a published producer rod specification. The C45E mechanical examples depend on +N or +QT and heat-treatment diameter dHT, which is not automatically the ordered stock diameter. They do not apply to C60E or 70Cr2. No hardness, strength or grade availability is inferred from nominal diameter.
Mechanical reference table
Mechanical reference table
Grade / material
Scope / condition
Re / Rp0.2 (MPa)
Rm (MPa)
A min. (%)
Impact reference
C45E / CK45
+N; dHT ≤ 16 mm
≥340
≥620
≥14
—
C45E / CK45
+N; 16 < dHT ≤ 100 mm
≥305
≥580
≥16
—
C45E / CK45
+QT; dHT ≤ 16 mm
≥490
700–850
≥14
—
C45E / CK45
+QT; 16 < dHT ≤ 40 mm
≥430
650–800
≥16
—
C45E / CK45
+QT; 40 < dHT ≤ 100 mm
≥370
630–780
≥17
—
Chemical composition references
Chemical composition references
Grade / material
Scope / condition
C (%)
Mn (%)
Si (%)
P (%)
S (%)
Cr / CEV (%)
C45E / CK45
EN ISO 683-1
0.42–0.50
0.50–0.80
0.10–0.40
≤0.025
≤0.035
Cr ≤0.40
C60E / CK60
EN 10083-2:2006 ref.
0.57–0.65
0.60–0.90
≤0.40
≤0.030
≤0.035
Cr ≤0.40
70Cr2
Published producer specification / 2020
0.65–0.75
0.75–0.90
0.20–0.30
≤0.030
≤0.030
Cr 0.55–0.70
Selected percentages by mass and test values are reference requirements within the stated scope, not the actual heat analysis or a complete specification. A dash means no value is declared here, not zero. Compare the offered heat and test results with the applicable specification and inspection document. If EN 10204 type 3.1 is required, agree document availability, heat traceability and test scope before ordering.
CK45
CK45 is a legacy designation associated with C45E, material number 1.1191. It is used for shafts, pins and mechanical components after appropriate material selection. Keep C45 (1.0503) distinct from C45E; the complete specification, residual-element limits and heat-treatment condition govern acceptance. EN 10060 controls hot-rolled round-bar dimensions, while EN ISO 683-1 concerns the selected non-alloy heat-treatment steel.
CK60
CK60 is a legacy designation associated with C60E, 1.1221. Its higher carbon range supports hardness and wear-oriented engineering applications after suitable processing. The displayed chemistry explicitly uses an EN 10083-2:2006 reference; agree the current governing specification separately. Do not substitute C60, C60E or C60S by name alone, or infer mechanical properties from carbon content.
70Cr2
70Cr2 is a chromium-bearing high-carbon enquiry grade used for selected wear-resistant parts and grinding-media feedstock. The displayed chemistry is a published producer-specific rod specification, not a universal current EN limit or evidence of EMRA stock. Confirm material number, complete grade specification, manufacturing route, hardenability, cleanliness, heat treatment and hardness acceptance. Do not apply C45E proof/tensile values to 70Cr2.
Delivery condition
Grade
Condition and acceptance
CK45 / C45E
Agree +AR, +A, +N or +QT as applicable; confirm heat-treatment section, hardness, tensile/proof strength, elongation, sampling and test position. A grade name does not guarantee the properties of a heat-treated finished component.
CK60 / C60E
Agree +AR, +A, +N or +QT as applicable; confirm heat-treatment section, hardness, tensile/proof strength, elongation, sampling and test position. A grade name does not guarantee the properties of a heat-treated finished component.
70Cr2
Agree +AR, +A, +N or +QT as applicable; confirm heat-treatment section, hardness, tensile/proof strength, elongation, sampling and test position. A grade name does not guarantee the properties of a heat-treated finished component.
Inspection and export enquiry
Send the exact product, size, full grade and standard edition, delivery condition, quantity, test requirements and named destination. Confirm cutting, coating, bundle or coil mass, protection, unloading and the Incoterms delivery point in the quotation. The destination guidance below supports port and inland comparisons; it does not confirm local stock or a fixed price.
Chemistry references and commercial grades
St37, St44 and St52 · historical DIN 17100 reference
Ladle-analysis reference for St37-2, St44-2 and St52-3 at t ≤16 mm only. Bare St37/St44/St52 names need a suffix, edition and delivery condition. Other thicknesses and product analysis have different rules. These legacy grades are not automatically equivalent to EN grades or interchangeable with CK45/CK60. For semi-finished feedstock, agree chemistry and downstream qualification separately.
St37, St44 and St52 · historical DIN 17100 reference
Grade / commercial type
C (%)
Mn (%)
Si (%)
P (%)
S (%)
St37-2 / 1.0037
≤0.17
—
—
≤0.050
≤0.050
St44-2 / 1.0044
≤0.21
—
—
≤0.050
≤0.050
St52-3 / 1.0570
≤0.20
≤1.60
≤0.55
≤0.040
≤0.040
Reference values are not shipment analysis or an inventory promise. Agree the complete specification, sampling basis, test methods and acceptance limits before ordering; confirm actual results on the heat/lot certificate. A dash means no numeric limit is stated in this selected reference, not zero.
Steel Round Bars Technical and Buying Guide
EMRA Steel supports enquiries for smooth steel round bars used in fabrication and engineering. Unlike ribbed rebar, engineering round bars are specified by the material grade, diameter, delivery condition and properties required for the finished component.
Product Form and Delivery Condition
Specify whether you require hot-rolled round bars or another agreed finish. Surface condition, straightness, diameter tolerances and any machining allowance should be stated. Heat treatment or other delivery conditions must be agreed explicitly rather than assumed from the grade name.
Round Bar Sizes and Lengths
The reference catalogue includes diameters from 8 to 200 mm and length examples of 6 and 12 m. Use these as enquiry references, not as a confirmed EMRA Steel stock list. Provide the exact diameter and cutting length; for machining, state whether the size refers to supplied stock or the finished component.
Grades and Standards
EN 10060 addresses dimensions and shape tolerances for hot-rolled round steel bars; it does not by itself specify a steel grade. State the material standard and complete grade separately. Structural carbon steel and engineering steels are different enquiry categories. If requesting a grade such as C45 or a legacy designation such as CK45, provide the governing specification and required delivery condition for technical review.
Applications and Material Selection
Round bars may be used as stock for shafts, axles, pins, fasteners and fabricated parts, depending on grade and processing. Machinability, strength, weldability and heat-treatment requirements should be determined from the intended component specification. Share drawings or technical requirements when available.
Quality Documents and Inspection
Request the necessary material identification, chemical analysis, mechanical test results and dimensional inspection documents. Agree any additional testing, surface acceptance criteria or traceability requirements before order confirmation.
Round Bar Prices by Diameter
12 mm
For 12 mm round bar, specify the full steel grade, required length and delivery condition. Include dimensional tolerances, machining allowance where relevant, order quantity and destination. EMRA Steel reviews these details before confirming supply options and quotation terms; the listed diameter is an enquiry example. 12 mm
14 mm
For 14 mm round bar, specify the full steel grade, required length and delivery condition. Include dimensional tolerances, machining allowance where relevant, order quantity and destination. EMRA Steel reviews these details before confirming supply options and quotation terms; the listed diameter is an enquiry example. 14 mm
16 mm
For 16 mm round bar, specify the full steel grade, required length and delivery condition. Include dimensional tolerances, machining allowance where relevant, order quantity and destination. EMRA Steel reviews these details before confirming supply options and quotation terms; the listed diameter is an enquiry example. 16 mm
18 mm
For 18 mm round bar, specify the full steel grade, required length and delivery condition. Include dimensional tolerances, machining allowance where relevant, order quantity and destination. EMRA Steel reviews these details before confirming supply options and quotation terms; the listed diameter is an enquiry example. 18 mm
20 mm
For 20 mm round bar, specify the full steel grade, required length and delivery condition. Include dimensional tolerances, machining allowance where relevant, order quantity and destination. EMRA Steel reviews these details before confirming supply options and quotation terms; the listed diameter is an enquiry example. 20 mm
22 mm
For 22 mm round bar, specify the full steel grade, required length and delivery condition. Include dimensional tolerances, machining allowance where relevant, order quantity and destination. EMRA Steel reviews these details before confirming supply options and quotation terms; the listed diameter is an enquiry example. 22 mm
25 mm
For 25 mm round bar, specify the full steel grade, required length and delivery condition. Include dimensional tolerances, machining allowance where relevant, order quantity and destination. EMRA Steel reviews these details before confirming supply options and quotation terms; the listed diameter is an enquiry example. 25 mm
28 mm
For 28 mm round bar, specify the full steel grade, required length and delivery condition. Include dimensional tolerances, machining allowance where relevant, order quantity and destination. EMRA Steel reviews these details before confirming supply options and quotation terms; the listed diameter is an enquiry example. 28 mm
32 mm
For 32 mm round bar, specify the full steel grade, required length and delivery condition. Include dimensional tolerances, machining allowance where relevant, order quantity and destination. EMRA Steel reviews these details before confirming supply options and quotation terms; the listed diameter is an enquiry example. 32 mm
40 mm
For 40 mm round bar, specify the full steel grade, required length and delivery condition. Include dimensional tolerances, machining allowance where relevant, order quantity and destination. EMRA Steel reviews these details before confirming supply options and quotation terms; the listed diameter is an enquiry example. 40 mm
50 mm
For 50 mm round bar, specify the full steel grade, required length and delivery condition. Include dimensional tolerances, machining allowance where relevant, order quantity and destination. EMRA Steel reviews these details before confirming supply options and quotation terms; the listed diameter is an enquiry example. 50 mm
60 mm
For 60 mm round bar, specify the full steel grade, required length and delivery condition. Include dimensional tolerances, machining allowance where relevant, order quantity and destination. EMRA Steel reviews these details before confirming supply options and quotation terms; the listed diameter is an enquiry example. 60 mm
80 mm
For 80 mm round bar, specify the full steel grade, required length and delivery condition. Include dimensional tolerances, machining allowance where relevant, order quantity and destination. EMRA Steel reviews these details before confirming supply options and quotation terms; the listed diameter is an enquiry example. 80 mm
100 mm
For 100 mm round bar, specify the full steel grade, required length and delivery condition. Include dimensional tolerances, machining allowance where relevant, order quantity and destination. EMRA Steel reviews these details before confirming supply options and quotation terms; the listed diameter is an enquiry example. 100 mm
150 mm
For 150 mm round bar, specify the full steel grade, required length and delivery condition. Include dimensional tolerances, machining allowance where relevant, order quantity and destination. EMRA Steel reviews these details before confirming supply options and quotation terms; the listed diameter is an enquiry example. 150 mm
200 mm
For 200 mm round bar, specify the full steel grade, required length and delivery condition. Include dimensional tolerances, machining allowance where relevant, order quantity and destination. EMRA Steel reviews these details before confirming supply options and quotation terms; the listed diameter is an enquiry example. 200 mm
Round bar pricing reflects grade, diameter, supplied length, delivery condition, quantity and inspection requirements. Cutting, finishing and transport arrangements can affect the scope of the offer. Compare quotations using the same material specification and delivery basis.
Request a Round Bar Quotation
Send the required diameter, length, full material grade, standard, delivery condition, quantity and destination. Add tolerances, machining allowance and document requirements where relevant.
Round Bar Frequently Asked Questions
Is a smooth round bar automatically suitable as reinforcement?
No. Reinforcement requires compliance with the specified reinforcement standard and project requirements. A smooth engineering bar should not be substituted based only on diameter.
Does EN 10060 identify the grade?
No. Specify the grade and its material standard separately from the dimensional standard.
Choose the product specification first; destination and shipment details belong in the delivery enquiry. Destination enquiry guides
Grade enquiries for Hot-rolled steel round bar
Hot-rolled steel round bar C45
For Hot-rolled steel round bar C45, confirm the complete material standard and edition, chemical analysis, delivery condition and inspection certificate. Review the offered material against the intended processing or project requirements. The designation is an enquiry reference; availability and equivalence to other grades require confirmation.
Hot-rolled steel round bar CK45
For Hot-rolled steel round bar CK45, confirm the complete material standard and edition, chemical analysis, delivery condition and inspection certificate. Review the offered material against the intended processing or project requirements. The designation is an enquiry reference; availability and equivalence to other grades require confirmation.
