1.7729 Hot Work Tool Steel

1.7729 steel round bars (also known as X22CrMoV12-1) are premium alloy steel designed for high-temperature and high-pressure industrial applications. Known for their excellent wear resistance, heat resistance, and high toughness, these round bars are commonly used in the production of hot work tools, die casting molds, forging molds, and industrial machinery.

Specifications of 1.7729 Tool Steel:

Grade	1.7729
Standard	EN 10269
Thickness tolerance	-0 to +0.1mm
Flatness	0.01/100mm
Technology	Hot Work / Forged / Cold Drawn
Surface roughness	Ra ≤1.6 or Rz ≤6.3

 

Mechanical Properties of 1.729 Tool Steel:

Tensile strength	Rm	> 785 MPa
Yield point	Re	667 - 765 MPa
Elongation	A5	> 15%
Contraction	Z	> 45%
Impact resistance	KCU2	> 49 J
Hardness	HB	241 - 269 HB

 

Chemical Composition X22CrMoV12-1 steel rod:

C	Si	Mn	Ni	P	S	Cr	Mo	V	Ti	Al	Cu	As	B	Sn
0.17-0.23	0.4	0.35-0.75	0.2	0.02	0.02	0.9-1.2	0.9-1.1	0.6-0.8	0.07-0.15	0.015-0.08	0.2	0.02	0.01	0.02

 

Yield limits of thermally improvemed 20CrMoVTiB4-10 bars at varied temperatures:

 

Temperatures		20℃	50℃	100℃	150℃	200℃	250℃	300℃	350℃	400℃	450℃	500℃	550℃	600℃
Yield point	MPa	647	662	657	637	613	598	588	588	583	569	534	490	427

 

Tool Steel UT Test:

1.7729 hot work tool steel is subjected to ultrasonic testing (UT) to ensure internal soundness and reliability for critical applications. The UT test detects internal defects such as inclusions, porosity, shrinkage cavities, or cracks that may compromise the steel’s performance under high thermal and mechanical stresses. Inspection is carried out in accordance with international standards , using calibrated probes to evaluate the entire cross-section. Only defect-free material with homogeneous internal structure is accepted, guaranteeing high toughness, excellent thermal fatigue resistance, and consistent quality for die casting, extrusion dies, and hot forging tools.  

1.7729 hot work die steel Feature:

• Superior Heat Resistance: Excellent performance under extreme temperatures, making it ideal for high-heat tooling and machinery.

• Wear Resistance: Provides outstanding wear resistance in high-pressure and abrasive environments.

• Toughness & Durability: Capable of handling thermal cycling, shock loads, and mechanical stress.

• Versatility: Widely used in industries like automotive, aerospace, chemical processing, and power generation.

• Customizable Sizes: Available in custom diameters and lengths, allowing for tailored solutions to meet your specific requirements.

Suface Option

1.Black Surface – As-rolled or forged finish with oxide scale. 2.Ground Finish – Bright appearance with a slightly rough texture; not precision ground. 3.Machined Plate Finish – Bright and accurate dimensions; minor turning marks may be visible. 4.Peeled/Turned Finish – Bright with precise sizing; slight turning marks remain. 5.Polished Finish – Highly bright with precise dimensions; free from turning marks.

FAQ

Q1: What is 1.7729 steel round bar?
A1: 1.7729 steel, also known as X22CrMoV12-1, is a high-performance hot work tool steel with exceptional heat resistance, wear resistance, and toughness. It is commonly used for manufacturing high-temperature tooling, forging dies, die casting molds, and industrial machinery parts exposed to extreme conditions.

Q2: What are the main applications of 1.7729 steel round bars?
A2: 1.7729 steel round bars are primarily used in hot work tooling such as die casting molds, forging dies, and extrusion tools. They are also used in high-temperature mechanical components like shafts, pins, turbochargers, and aerospace tools due to their wear resistance and thermal stability.

Q3: How does 1.7729 steel perform at high temperatures?
A3: 1.7729 steel can withstand temperatures up to 600°C without losing its hardness or mechanical properties. It is designed to handle thermal cycling, shock loads, and mechanical stress, making it ideal for high-heat applications in power plants, chemical reactors, and high-temperature tooling.

Why Choose SAKYSTEEL :

Reliable Quality – Our stainless steel bars, pipes, coils, and flanges are manufactured to meet international standards such as ASTM, AISI, EN, and JIS. Strict Inspection – Every product undergoes ultrasonic testing, chemical analysis, and dimensional control to ensure high performance and traceability. Strong Stock & Fast Delivery – We maintain regular inventory of key products to support urgent orders and global shipping. Customized Solutions – From heat treatment to surface finish, SAKYSTEEL offers tailor-made options to match your exact requirements. Professional Team – With years of export experience, our sales and technical support team ensures smooth communication, quick quotations, and full documentation service.

SAKY STEEL'S Quality Assurance (including both Destructive and Non-Destructive) :

1. Visual Dimension Test 2. Mechanical examining like tensile, Elongation and reduction of area. 3. Impact analysis 4. Chemical examination analysis 5. Hardness test 6. Pitting protection test 7. Penetrant Test 8. Intergranular Corrosion Testing 9. Roughness Testing 10. Metallography Experimental Test

Custom Processing Capabilities:

1.Hardening and tempering process 2.Vacuum heat treatment 3.Bright polished surface finish 4.Bright milled surface finish 5.CNC precision machining 6.Deep hole drilling 7.Cutting into smaller sections 8.Machining to near-net mold shape We welcome your price inquiries based on your drawings.

SAKY STEEL'S Packaging:

1. Packing is quite important especially in a case of international shipments in which consignment pass through various channels to reach the ultimate destination, so we put special concern regarding packaging. 2. Saky Steel's pack our goods in numerous ways based on the products. We pack our products in multiple ways, such as,