Hot Rolled 1045 Bar
Black mill-scale surface with dimensions and straightness defined by the hot-wrought bar order.
Global Steel Supply & Processing
AISI / SAE 1045 · Hot-Rolled & Cold-Finished Bar · SAE J403:2024
Source 1045 medium-carbon steel bars for shafts, machine components and heat-treatment projects. Send your bar diameter, length, supply condition, required tonnage and destination port for factory pricing.
Check bar specifications ↓Prepare your bar order with an exact grade, diameter, length, finish and inspection requirement.
| Steel grade | SAE / AISI 1045 · UNS G10450 |
| Grade chemistry | SAE J403:2024 — medium-carbon steel |
| Hot-wrought bar | ASTM A576-25 and applicable ASTM A29/A29M-23 general requirements |
| Cold-finished bar | ASTM A108-24, when specified |
| Bar forms | Round bar; square and hexagonal sections by enquiry |
| Supply condition | Hot rolled, cold drawn, turned, ground or polished as confirmed |
| Diameter & cut length | According to your RFQ, selected tolerance and available stock/production |
| Heat treatment | Request normalized or quench-and-tempered condition with required tests when applicable |
| Surface & tolerance | Specified by product form, delivery condition and purchase agreement |
| Material certificate | Heat analysis, mechanical results and identification as agreed |
| Buying unit | Bar count / total metric tons; destination port and delivery terms |
Specify the starting material form that fits your machining, forging or heat-treatment process.
Black mill-scale surface with dimensions and straightness defined by the hot-wrought bar order.
Finished bar stock for machining projects that call for controlled diameter, finish and straightness.
Clearly defined diameter, solid circular end faces and cut lengths for your component list.
Review the medium-carbon grade composition and define any additional chemical limits in your order.
| Element | Reference Composition |
|---|---|
| Carbon (C) | 0.43–0.50% |
| Manganese (Mn) | 0.60–0.90% |
| Phosphorus (P) | ≤ 0.030% |
| Sulfur (S) | ≤ 0.035% |
| Silicon (Si) | Heat analysis confirmed on the MTC |
SAE J403:2024 chemistry reference. The purchase specification determines the applicable chemistry limits and material acceptance for your 1045 bars.
Increased carbon content gives 1045 a different strength and heat-treatment response from lower-carbon grades such as 1018. Your ordered bar condition remains essential to component performance.
Use supply-condition data to evaluate the starting bar material. Your required performance and diameter should be specified in the purchase order.
| Condition / Ø 19–32 mm | Tensile* | Yield* |
|---|---|---|
| Hot rolled | ≈ 565 MPa | ≈ 310 MPa |
| Cold drawn | ≈ 625 MPa | ≈ 530 MPa |
*Reference examples for selected 19–32 mm round bars at room temperature. Actual strength, elongation and hardness vary by bar diameter, reduction and processing condition. Confirm acceptance values in the MTC.
1045 is commonly specified for machinery parts that may require normalizing, quenching and tempering, or localized surface hardening. Define the treatment schedule and any target hardness or strength in your inquiry.
Select the carbon grade and condition that match your machining, strength and heat-treatment requirements.
Medium-carbon steel commonly specified for shafts, axles, hubs and other mechanical components requiring a tailored material condition.
Lower-carbon bar commonly used for machined parts, pins and formed components where the purchase specification favors its workability.
Source steel bar with clear requirements, factory-scale production, company-wide stock operations and export order coordination.
Our company produces 8 million metric tons of steel annually across its product range.
Manufacturing ↗Our regular inventory totals 1 million metric tons across steel categories. Share your 1045 bar schedule for a current stock check.
Steel Inventory ↗State your SAE chemistry, hot-rolled or cold-finished condition, tests, tolerances and MTC scope in one purchase request.
Quality Control ↗Combine mixed bar diameters, cut lengths, packing preferences and destination port in your quotation enquiry.
Contact Sales ↗Select 1045 bar for machined components and industrial equipment where the approved drawings define material, treatment and finished dimensions.
Turned stock for industrial shafts, drive parts and axle components.
Bar starting stock for machined hubs and mechanical couplings.
Heat-treatment-ready blanks when specified by component drawings.
Cylindrical pins and roller parts made from solid bar.
Structural machine components and rotating parts for agricultural machinery.
General machined machine parts and load-bearing components.
Estimate your order tonnage using solid round bar diameter, individual length and quantity.
Calculated from a solid circular section and nominal steel density of 7,850 kg/m³. Actual delivered weight is based on the agreed measurement and commercial terms.
Send the specification details that determine material selection, bar condition and pricing.
BAOSTEEL METAL supports your bar procurement with company-wide steel production of 8 million metric tons annually. Share the 1045 grade, bar diameters, surface condition and total quantity to plan the supply route.
Send your diameter, length, finish and quantity to confirm current stock and production arrangements. Our company maintains 1 million metric tons of regular steel inventory across product categories.
Match your purchased bar to its heat analysis, surface condition, dimensional tolerance and ordered mechanical test requirements. Specify hardness or heat-treated performance where applicable.
Include your cut list or component drawings with the bar enquiry. Our team can review cutting, turning and end-preparation options for the selected 1045 diameter and delivery condition.
Specify bar length, shipment weight and unloading requirements. Your confirmed order can include suitable bundling, material identification, supports and loading arrangements.
Compare medium-carbon grades and carbon steel bar products against your required drawing and delivery condition.
SAE J403 defines grade chemistry. ASTM A576 and A29/A29M cover relevant hot-wrought bar requirements; ASTM A108 covers cold-finished bars. Specify the intended product standard and edition with the RFQ.
1045 contains approximately 0.43–0.50% carbon, compared with 0.15–0.20% for 1018. Material selection follows your required strength, machinability, heat treatment and engineering specification.
Include the target condition, hardness or strength and diameter in your inquiry. The appropriate heat treatment and test requirements can be confirmed during quotation.
Send diameter, length, quantity, surface or heat-treated condition, test documentation, packing requirements and destination port. Add machining drawings when you require prepared blanks.
Send your required grade, dimensions, quantity and destination. Our team will review the inquiry.