Description
SAE 10B21 Wire Rod
SAE 10B21 is a Boron Steel wire rod refers to steel alloyed with a small amount of boron, usually less than 1%. The addition of boron to steel greatly increases the hardenability of the resulting alloy.
There are two primary boron steel alloys that are widely used in automotive : 10B21 and 15B24. Both of these alloys are weldable, formable, exhibiting an excellent response to heat treatment, and are capable of reaching strengths up to 210 ksi (1450 Mpa).
10B21 Steel – This alloy contains 0.18–0.23% carbon, 0.70–0.110% manganese, and 0.0005–0.003% boron. Its composition makes it particularly suitable for applications where increased strength and toughness are required. This alloy is also a common choice in parts that will undergo carburizing and carbonitriding processes.
15B24 Steel – Slightly richer in carbon (0.19 – 0.25%), manganese (1.35 – 1.65%), and boron (0.0005 – 0.003%), 15B24 is known for achieving higher strength and wear resistance in thicker components.
Size Range :
Diameter – 5 mm to 20 mm in Wire Rod Coil Form.
10B21 CHQ Alloy steel Wires :
We Textron Steel and Alloys are offering the best quality CHQ 10B21 Wire Rod. Offered products are made accordingly to meet the needs of various sizes and specifications as per their respective applications.
Features : Durable & Wear-resistant
What is boron steel wire?
Boron steel is a type of steel wire that is made with a small amount of boron. The boron content is usually between 0.0005% and 0.003%. The wire is made by drawing the steel through a boron-rich solution. This solution hardens the steel and makes it more resistant to wear and tear.
10B21 Chemical Composition of 10B21 :
| Elements | AISI 10B21 |
| C | 0.18 – 0.23 |
| Mn | 0.80 – 1.10 |
| Si | 0.30 max |
| Cr | 0.10 – 0.20 |
| S | 0.03 max |
| P | 0.03 max |
| B | 0.0005 – 0.003 |
Applications of AISI 10B21 / SAE 10B21 :
SAE 10B21 is used in a high tensile strength and low cost, it is a major component used in buildings, infrastructure, tools, automobiles, and appliances. e.g. 8 grade nuts, 8.8 grade bolts & other fasteners etc.
Carbon steel 10B21 is an alloy of iron and carbon and other elements. Because of its high tensile strength and low cost, it is a major component used in buildings, infrastructure, tools, ships, automobiles, machines, and appliances.
The other Boron Grade that are primarily used more is as below.
| Grade | AISI 10B21 | AISI 15B25 | DIN 19MnB4M | AISI 15B41 |
| C | 0.18 / 0.23 | 0.23 / 0.28 | 0.20 / 0.25 | 0.36 / 0.44 |
| Mn | 0.80 / 1.10 | 0.90 / 1.30 | 0.80 / 1.10 | 1.35 / 1.65 |
| Si | 0.30 max | 0.30 max | 0.15 / 0.30 | 0.15 / 0.30 |
| Cr | 0.10 / 0.20 | 0.10 / 0.20 | 0.30 / 0.40 | 0.15 / 0.30 |
| S | 0.03 | 0.03 | 0.03 | 0.03 |
| P | 0.03 | 0.03 | 0.03 | 0.03 |
| B | 0.0005 / 0.003 | 0.0005 / 0.003 | 0.0006 / 0.003 | 0.0006 / 0.003 |
What is Cold Heading Quality (CHQ) wire ?
Cold Heading Quality (CHQ) Wires is a kind of steel wire that is manufactured by drawing and annealing wire rods. CHQ wires are typically used for making critical fasteners, cold heading and cold extrusion components.
The major applications of CHQ wire include Fasteners, Cold Forged Parts, Bearings, production of coupling parts such as bolts, nuts, and small screws, and parts for machines.
The manufacturing of the Cold Heading Quality (CHQ) Wires involves two important process named
- • HRPPD (Hot Rolled Pickling, Phosphating and Drawing)
- • SAPPD (Spherodized Annealed, Pickling, Phosphating, and Drawing)
- • DAPPD (Drawing, Spherodized Annealed, Pickling, Phosphating, and Final Drawing)