Product Overview
The 1.4777 heat-resistant steel boiler grate (GX40CrSi13 material) is a high-quality heavy-duty boiler accessory manufactured in strict accordance with DIN EN 10295 and DIN 17445 industrial standards. As a core high-temperature resistant component for industrial boilers, biomass boilers, waste incinerators and thermal energy equipment, this cast steel boiler grate features precise alloy proportioning and stable high-temperature mechanical properties. With excellent thermal fatigue resistance and oxidation resistance, it is a widely applied and highly durable mainstream boiler grate bar product for medium and high-temperature industrial combustion systems worldwide.
Our company boasts over 20 years of professional production experience in boiler accessories. All 1.4777 steel boiler grates are manufactured through multiple rigorous processes including refined smelting, precision casting, heat treatment and finishing. The product effectively solves common industrial defects of ordinary boiler grates such as high-temperature deformation, brittle fracture, oxidative peeling and short service life, ensuring the long-term stable operation of boiler equipment under harsh working conditions of high temperature, high pressure and strong corrosion.
1.4777 Steel Core Material & Performance Parameters
1.4777 (GX40CrSi13) heat-resistant cast steel is a specialized chromium-silicon alloy steel for high-temperature boiler components, with a scientific and standardized chemical composition and stable physical properties, which determines the superior performance of our custom boiler grate:
Standard Chemical Composition
Carbon (0.35-0.45%), Chromium (12.0-14.0%), Silicon (1.30-1.80%), Manganese (≤0.80%), Nickel (≤1.00%), with strictly controlled sulfur and phosphorus impurities to avoid high-temperature performance attenuation.
High Temperature Resistance
Continuous working temperature up to 850℃-950℃, instantaneous temperature resistance reaching 1000℃+, excellent high-temperature creep resistance, no permanent deformation under long-term thermal shock.
Superior Durability
Outstanding thermal fatigue resistance and high-temperature oxidation resistance, effectively resisting flue gas corrosion, ash abrasion, and repeated cooling and heating impact in boiler combustion chambers.
Compliant Certification
Fully compliant with DIN 1690/2, DIN 1683/1 and EN 10295 industrial standards, with complete quality inspection reports and ISO certification.
- Compared with ordinary cast iron boiler grates and low-alloy steel grates, 1.4777 heat-resistant steel boiler grates have 3-5 times longer service life, lower equipment maintenance frequency, and significantly reduce the comprehensive operating cost of industrial boiler systems.
- 1.4776 (GX40CrSi28) high chromium silicon heat-resistant steel
- 1.4823, 1.4729 high-temperature alloy steel
- 310S, 309S stainless heat-resistant steel
- High chromium nickel alloy, wear-resistant cast steel, heat-resistant cast iron
- 12CrMoV, 15CrMo and other heat-resistant alloy steel materials
We customize all mainstream types of boiler grates and boiler grate accessories in the market, covering all industrial boiler application scenarios:
- Boiler Grate Bar: Straight grate bar, curved grate bar, tooth-shaped grate bar, single-row/double-row grate bar
- Mobile Boiler Grate: Reciprocating moving grate, chain moving grate, rotary boiler grate
- Fixed Boiler Grate: Static cast steel grate, integral boiler grate plate
- Specialized Grate: Biomass boiler grate, waste incinerator grate, steam boiler grate, hot water boiler grate, industrial furnace grate
- Grate Accessories: Boiler grate pin, grate bracket, connecting buckle, sealing parts and supporting components
Wide Application of 1.4777 Heat-Resistant Boiler Grate
Our custom 1.4777 steel boiler grates are widely applicable to various industrial thermal equipment, favored by customers in power generation, chemical industry, metallurgy, environmental protection, heating and other fields:
- Biomass fired boilers, coal-fired industrial boilers
- Municipal solid waste incinerators, industrial waste incineration equipment
- Steam boilers, hot water heating boilers, thermal oil furnaces
- Industrial drying furnaces, metallurgical heating furnaces, thermal energy supporting equipment
Boasting 20+ years of experience, Juhe Yulong Special Steel is a professional manufacturer and direct supplier of heat-resistant steel boiler grates. We deliver high-quality, fully customizable boiler parts with reliable quality and cost-effective factory pricing.
Decades of Professional Expertise
We own mature casting and heat treatment technologies. Our skilled team provides tailored solutions for diverse boiler working conditions.
Full Customization Support
Customizable in material, structure and size. Flexible MOQ and fast lead time for customized and bulk orders.
Strict Quality Assurance
Precision casting and full-process inspection guarantee high temperature resistance, wear resistance and long service life, with complete export certifications.
Factory Direct & Full Service
Direct factory sales offer competitive prices. We provide one-stop pre-sales, production and after-sales support for global clients.
Complete Product Range
We offer a full lineup of boiler accessories, enabling one-stop procurement to save your cost and time.
Everything You Need to Know
What is the maximum working temperature of 1.4777 boiler grate?
Our 1.4777 heat-resistant steel boiler grate supports a continuous working temperature of 850℃-950℃ and can withstand instantaneous high temperature above 1000℃, without deformation or cracking under long-term thermal shock.
How long is the service life of 1.4777 boiler grate?
Compared with ordinary cast iron and low-alloy boiler grates, the 1.4777 heat-resistant steel grate has 3-5 times longer service life, effectively reducing equipment replacement frequency and maintenance costs.
Do you provide factory direct sales and export certification?
We are a direct manufacturer with no middlemen. All products pass full-process quality inspection and are equipped with complete test reports and export qualification documents, meeting international industrial standards for global export.
What kinds of boilers are your grates suitable for?
Our boiler grates are widely applicable to biomass boilers, coal-fired industrial boilers, waste incinerators, steam boilers, hot water boilers and various industrial thermal furnace equipment.
Contact Us
If you need standard 1.4777 heat-resistant steel boiler grates or customized boiler grate products with special materials and sizes, welcome to contact Juhe Yulong Special Steel Co., Ltd.! We will provide you with professional technical solutions, free quotation and customized drawing optimization services, and look forward to establishing long-term stable cooperative relations with global industrial customers.
Hot Tags: 1.4777 heat-resistant steel boiler grate, China 1.4777 heat-resistant steel boiler grate manufacturers, suppliers, factory, boiler furnace parts, boiler system parts
