Forged Steel Square & Flat Bars
Open-die forged square and flat bars as general-purpose sections for machining, die holding, tooling and heavy structural applications.
Forged Steel Square & Flat Bars
Forged square and flat bars are general-purpose open-die sections produced by forging heated billets between flat or profiled dies. Compared with rolled stock, forging delivers a refined grain structure, sound internal quality and better mechanical properties across the section, which matters for die holders, wear plates and heavily loaded frames.
CREATEEL supplies forged squares and flats from two partner mills — Shandong Panjin for large open-die sections up to 1500 mm width, and Jiangsu Zhuhong for regular sections with rough machining, finish machining and heat treatment under one roof. Every piece is ultrasonic tested and delivered with EN 10204 3.1 certification; 3.2 via third-party inspection on request.
Technical Specifications
Available Material Grades
| Category | Typical Grades | Typical Applications |
|---|---|---|
| Carbon Steel | 45#, C45, S355J2 | Frames, base plates, general engineering |
| Alloy Steel | 40Cr, 42CrMo4 / 4140, 34CrNiMo6 / 1.6582 | Die holders, high-stress tooling, wear plates |
| Hot-Work Steel | 5CrMnMo, 5CrNiMo, H13 / 1.2344 | Forging dies, die holder blocks |
| Plastic Mold Steel | P20 / 1.2311, 718H / 1.2738 | Mold bases, platens, press frames |
* Other grades available on request against chemical composition or drawing.
Available Dimensions
| Product Form | Size Range | Length | Max Piece Weight |
|---|---|---|---|
| Square Bars | 80 – 600 mm | 1,000 – 9,000 mm | ~15 t |
| Flat Bars | Width 100 – 1500 mm × Thickness 80 – 600 mm | 1,000 – 12,000 mm | ~15 t |
| Blocks / Modules | Per drawing, up to 15 t single piece | Custom | ~15 t |
* Typical ranges; larger sections and special lengths on request.
Typical Applications
Die Holders & Mold Bases
Machined holder blocks for forging dies, stamping dies and injection mold bases, pre-hardened or heat treated to order.
Machine Frames & Columns
High-strength sections for press frames, machine beds and columns where rolled stock falls short on internal quality.
Wear Plates & Guides
Alloy steel flats for wear plates, guide rails and liner plates in bulk handling and heavy equipment.
Tooling & Fixtures
Custom-size squares and flats for jigs, fixtures and workshop tooling, cut-to-length and rough machined.
Quality Control & Testing
Non-Destructive Testing (NDT)
- Ultrasonic Testing (UT) – per EN 10228-3 / ASTM A388
- Magnetic Particle Testing (MT) – per ASTM E1444
- Liquid Penetrant Testing (PT) – per ASTM E165
- Dimensional Inspection – 100% recorded
Mechanical Testing
- Tensile Test – per ASTM E8 / EN ISO 6892
- Impact Test (Charpy V) – per ASTM E23
- Hardness Test (Brinell / Rockwell)
- Chemical Analysis – spectrometric
Certification: EN 10204 3.1 mill certificate standard, 3.2 via third-party inspection (SGS / BV / TUV) on request. Heat number stamped on every piece for full traceability.
Manufacturing Process
Our forged steel products are produced through a 12-step forging process combining controlled heating, precision open/closed-die forging, tailored heat treatment, and CNC finish machining to achieve superior metallurgical structure and dimensional accuracy.
Raw Material Selection & Inspection
High-quality ingots or continuous-cast billets (EAF-LF-VD refined) are selected based on grade specification. Chemical analysis, surface inspection, and UT testing are performed.
Billet Sawing to Forging Blanks
Raw stock is cut to calculated forging weights using high-speed band saws, accounting for scale loss, flash, and machining allowances.
Furnace Heating
Blanks are heated to 1150–1250°C (depending on grade) in a gas-fired bogie-hearth or chamber furnace with precise zone temperature control to ensure uniform austenitization.
Open-Die / Closed-Die Forging
Heated blanks are forged using hydraulic presses or air hammers. Open-die forging uses flat/V-dies for simple bars; closed-die forging uses precision tooling for near-net-shape profiled components.
Trimming & Punching (Closed-Die)
For closed-die forgings, excess flash is trimmed in a mechanical press and holes are punched while the part is still hot, improving material utilization.
Post-Forging Heat Treatment
Forgings undergo normalizing, annealing, or quenching & tempering per material grade to refine grain structure, relieve residual stresses, and achieve specified hardness and mechanical properties.
Blasting & Surface Cleaning
Scale and oxide layer are removed by shot blasting (steel shot S230–S330) to reveal surface defects and prepare for machining.
Rough Machining
Excess forging allowance is removed by CNC lathe turning, leaving 2–3 mm finishing stock. Rough machining also removes surface decarburization and forging irregularities.
Ultrasonic Testing (UT)
100% ultrasonic inspection per EN 10228-3 or ASTM A388 detects internal defects such as cracks, inclusions, porosity, and segregation. Acceptance criteria as per grade requirements.
Finish Machining
CNC turning, milling, and drilling achieve final dimensional tolerances (up to IT7) and surface roughness (Ra 1.6–3.2 μm) per customer drawings.
Hardness & Metallographic Testing
Brinell/Rockwell hardness verification, tensile testing on sacrificial coupons, and metallographic examination for grain size, inclusion rating, and carbide structure (critical for tool/die steels).
Final Inspection & Packaging
Dimensional inspection of all critical features, MPI/LPT for surface defects if required, stamping grade and heat number, rust-proof oiling, and packing in wooden cases or steel bundles.
Applications
Where our products deliver proven performance across industries worldwide.
Shafts & Rotating Equipment
Forged round bar is the raw material for motor, pump, turbine, and marine shafts, where UT-verified internal soundness and through-hardened properties prevent in-service failures.
✓ UT per EN 10228-3
Gears, Pinions & Drive Components
Case-hardening and through-hardening grades (17CrNiMo6, 42CrMo4) supply gear blanks that carry high torque with controlled distortion.
✓ QT and case-hardening grades
Flanges & Pressure Fittings
Forged bar feeds flange rings, blind flanges, and fittings for pressure systems in carbon, alloy, and stainless grades.
✓ ASME/EN flange materials
Tooling & Die Holders
Pre-hardened and tool-steel rounds support die holders, mold bases, and tooling components requiring uniform hardness.
✓ Pre-hardened 2738/P20 options
Downhole & Wellhead Components
Alloy bar feeds wellhead blocks, valve bodies, and downhole tools requiring API-grade material with traceability.
✓ API 6A material classes
Custom Machined Components
Cut-to-length, pre-machined, and fully machined round bar components reduce your in-house machining cycle time.
✓ Cut-to-length + rough machining
Frequently Asked Questions
What forged square and flat bars do you supply?＋
Open-die forged squares from 80 to 600 mm and flat bars up to 1500 mm wide, cut-to-length and supplied as-forged, rough machined or finish machined.
What grades are available?＋
C45, S355J2, 40Cr, 42CrMo4 / 4140, 34CrNiMo6 / 1.6582, 5CrNiMo, H13 and P20 / 718H — other grades on request against composition or drawing.
What heat treatment conditions are offered?＋
As-forged, normalized, quenched + tempered, and pre-hardened conditions with certified mechanical properties.
How is quality verified?＋
100% ultrasonic testing per EN 10228-3, plus hardness, mechanical and chemical testing per heat and lot.
What documentation comes with my order?＋
EN 10204 3.1 mill certificates, UT reports and heat treatment charts; 3.2 certification via third-party inspection on request.
Can you supply machined blocks or plates?＋
Yes — blocks and modules machined per drawing, including die holder blocks and mold bases.
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