Carbon steel /Round bar SAE1045/ S45C/ 45#

Specifications

Chemical composition (%)  

Mechanical Properties

Thermal Treatments.  

Annealing: 1550F (840C), hold 2 hours, slow cool 50F(30C)/hr. max. to 1200F (650C), then air or furnace cool. Hardness

 BHN 185/200.

Stress Relieving:

Annealed Material: 1100-1300F (595-740C), hold 2 hrs, air cool.

Hardened Material: 50-100F (30-55C) below last tempering temperature, hold 2 hrs, air cool.

Straightening: Best done warm 400-800F (205-425C)

Hardening: (Atmosphere or Vacuum Furnace)

Preheat: 1250-1300F (675-705C), equalize

High Heat: 1550-1600F (840-870C), soak 10 to 30 minutes. For vacuum hardening, use the high side of the high heat

range and soak times.

Quench: Oil quench to hand warm, 150F (650C). Temper immediately. Water quenching from 1550F (840C) may be

 used for simple shapes and larger sections. Note vacuum furnaces must have oil quench capability to achieve

comparable results.

Temper: Tempering at 400-1200F (205-650C) for 1 hour per inch (25mm) of thickness at temperature is recommended

(2 hrs min). Air cool to room temperature.  

Welding

Medium carbon steel filler material.

Annealed Material:
Preheat: 400F (205C)
Post heat: 500-600F (260-315C)

Hardened Material:
Preheat: 50F (30C) less than last tempering temperature.
Postheat: 50F (30C) less than last tempering temperature.

Delivery Condition

Forged + Annealed + Machining (Peeled/Turned)

AISI 4140/DIN1.7225 Steel can be supplied in various finishes including hot-rolled, pre-machined, fine-

machined and precision ground. It is also available in the form of hollow bar.

Typical Applications

1. Support Plates Filler Blocks

2. Punch Holders Structural Parts

3. Clamps Base Plates

4. Gages Molds

5. Brake Dies Jigs

6. Fixtures Tool Holders

7. High-Strength Parts

Size Availability 

We offer AISI 4140/ DIN 1.7225 mould steel in different types of shape, including square, flat and round. difference size of length/width/thickness available etc.

Both electric steel and electroslag steel/Standard – Non-standard are available.

Quality Assured Supply:

AISI 4140 DIN 1.7225 steel  is supplied in accordance with our ISO 9001 : 2008 registration.

We offer most competitive price for below steel: