1045 Steel Plate

Looking for a reliable supplier of 1045 Steel Plate? Sanhe Steel provides you with a complete range of manufacturer direct supply solutions. Compared to similar products, our steel plates have a more uniform internal structure and heat treatment response, which can not only withstand extremely high physical impacts but also maintain dimensional stability during precision cutting. Whether you are using it for large mechanical components or precision mold bases, this steel plate can significantly extend the service life of the finished product while ensuring cost-effectiveness.

Product details

Excellent machinability: Whether in turning, milling, or drilling operations, this steel plate exhibits excellent chip control performance, reducing tool wear.

Heat treatment response sensitive: suitable for various heat treatment processes such as normalizing, annealing, quenching, and tempering, and can be customized according to the specific strength requirements of customers.

Surface quality: The steel plates produced by Sanhe Steel are finely leveled, with minimal surface oxidation and thickness tolerances controlled at industry-leading levels.

Product specifications

Product Application

Due to its strong load-bearing capacity, 1045 Steel Plate is widely used in the following fields:

1. Mechanical manufacturing: used for manufacturing gears, bearings, connecting rods, and crankshafts.

2. Mold industry: suitable for low to medium precision mold bases, templates, and brackets.

3. Heavy equipment: excavator wear-resistant parts, agricultural machinery frames, and conveying systems.

4. Fasteners: Manufacturing high-strength bolts, washers, and locating pins。

Precautions for use

1. Welding preheating: Due to the high carbon content, direct welding is prone to cracking. It is recommended to preheat to 150-250 ° C before welding and slowly cool down after welding.

2. Quenching medium: When performing hardening treatment, it is recommended to use oil quenching to reduce the risk of deformation and cracking; If pursuing extremely high hardness, water quenching requires strict control of cooling time.

3. Storage rust prevention: This material does not contain rust prevention elements such as chromium. Long term storage requires applying rust prevention oil or maintaining a dry environment.

FAQ

Q: What is the surface hardness that 1045 Steel Plate can achieve?

A: By induction hardening or flame hardening, its surface hardness can usually reach around HRC 54-60. But please note that the heart will still maintain good resilience.

Q: Do you provide material certification for your steel plates?

A: Yes, all steel provided by Sanhe Steel comes with an original material list (MTC), which includes chemical composition analysis and physical and mechanical property testing data.

Q: Is 1045 Steel Plate suitable for laser cutting?

A: Very suitable. Our board has good flatness, low impurity content, small heat affected zone during laser cutting, and a smooth cut, which can effectively reduce the workload of secondary processing.

Q: What is the difference between 1045 and 45# steel?

A: 1045 is the AISI/SAE designation for this medium carbon steel grade, while 45# is the equivalent Chinese GB standard grade. Both share similar chemical composition (C 0.42%-0.50%) and mechanical properties. We supply both designations with full MTC documentation for international project compliance.

Q: Can 1045 steel plate be used for high-precision mold bases?

A: Yes, 1045 steel plate is suitable for low to medium precision mold bases, templates, and brackets due to its good machinability and dimensional stability. For high-precision or large-volume production molds, we recommend considering P20 or 718H pre-hardened mold steels for better wear resistance and stability.

Q: What is the recommended quenching temperature for 1045 steel?

A: The typical quenching temperature for 1045 steel is 820-860°C. Oil quenching is recommended to minimize deformation and cracking risks. For sections requiring maximum hardness, water quenching can be used with strict cooling time control. Tempering temperature ranges from 400-650°C depending on the desired hardness-toughness balance.

Quality Warranty

Sanhe Steel provides a comprehensive quality guarantee for all 1045 steel plates:

Material Conformance Guarantee — 12 Months: We warrant that every plate meets the chemical composition and mechanical property requirements specified in ASTM A29 for 1045 grade. Any non-conformance traceable to our production will be replaced at no cost.

Dimensional Accuracy Assurance: Should any plate fail to meet the ordered thickness, width, or length tolerances due to processing errors on our side, we will rework or replace it promptly.

Hardness Consistency Commitment: Each batch is processed under controlled conditions to ensure consistent hardness across the plate surface. We provide actual hardness test data with every shipment.

Full Documentation & Traceability: Every plate comes with an original Mill Test Certificate (MTC) listing heat number, chemical analysis, tensile results, and hardness values. All records are retained for full traceability.

Third-Party Inspection Support: We fully support SGS, BV, or any accredited inspection body to conduct testing at our factory prior to shipment.

Warranty Exclusions: Physical impact damage, improper heat treatment, improper storage or handling, chemical corrosion, unauthorized modification, or normal wear and tear.

Real Customer Case

Project: Excavator frame and structural component production

Location: China

Specification: 1045 steel plate, 20-50mm thickness, hot-rolled delivery

Order Quantity: 1,200 tons

Application: Excavator frames, boom sections, and structural supports

Key Requirement: High strength (≥570MPa), good weldability with preheating, dimensional stability for precision assembly

Welding Procedure: Preheating to 150-200°C, slow cooling post-weld

Delivery: 20 working days

Outcome: All plates passed tensile and hardness testing; customer confirmed welding quality and assembly accuracy met design specifications with zero rework.