SPV490 boiler steel plate offered by GNEE belongs to the Japanese standard boiler and pressure vessel steel plate, the implementation standard: the implementation of the Japanese standard "JISG3115". We provide SPV490 pressure vessel plate material with a small amount of alloying elements, which can make SPV490 pressure vessel steel plate has high strength and impact toughness, at the same time, we provide SPV490 pressure vessel plate with good machinability. Meanwhile, our SPV490 pressure vessel steel plate has good processing performance, and we can provide processing service according to your product requirements. In addition, our SPV490 boiler steel plate has good corrosion resistance.
Mechnical property for SPV490 steel plate:
| SPV490 steel plate | >=6 <= 50 | > 50 <= 100 | > 100 |
| 490 | 470 | 450 | |
| 610-740 | |||
Chemical composition for SPV490 steel plate (Ladle Analysis Max%)
| Main chemical elements composition of SPV490 steel plate | ||||
| C | P | S | ||
| 0.18 | 0.75 | 1.60 | 0.030 | 0.030 |
Process Characteristics of SPV490
Adopts controlled rolling and normalized/quenched-tempered thermal processing, precisely regulating heating temperature (880–950℃) and cooling rate. This refines the grain structure, uniformly distributes mechanical properties across the plate, and ensures high strength and low-temperature toughness coexist without mutual compromise.
Low carbon and controlled alloy element content reduce hardenability of the weld zone. No preheating or minimal preheating (<=100℃) is required for conventional welding processes (MIG/TIG/submerged arc welding). The weld joint matches the base metal in strength and toughness, avoiding cold cracks and ensuring welding quality and structural integrity.
Equipped with high-precision rolling and leveling equipment, the plate achieves tight dimensional tolerances (thickness tolerance ±0.5mm, flatness <=2mm/m). Strict surface treatment removes oxide scale and defects, with surface quality meeting JIS G3115 Class A standards, suitable for direct processing and assembly.
Implements full-process quality monitoring from smelting to finished product, with real-time testing of chemical composition and mechanical properties. Each batch of steel plates passes uniform performance verification, ensuring no obvious property fluctuations, which meets the mass production requirements of pressure vessel manufacturing.
: As the strongest grade in the standard (Yield >=490MPa), it allows for , reducing overall structure weight and material costs.
for pressure-tight vessels.
Low-Temperature Toughness-10℃ or below, preventing brittle fracture under extreme pressure or cold climates.
typical in refineries and power plants.
: Frequently used as a high-performance alternative to ASTM A537 Class 2, making it ideal for international boiler and tank projects.
Get an valued quotation for SPV490, Contact GNEE Steel.
What is the maximum working temperature of SPV490?
The maximum working temperature of SPV490 is generally not more than 450℃. When working at higher temperatures, the mechanical properties of the steel plate will decrease, which may affect the safety of the pressure vessel.
How to store SPV490 steel plates?
SPV490 steel plates should be stored in a dry, ventilated and rainproof warehouse to avoid moisture and rust. They should be placed horizontally, separated from the ground by sleepers, and avoid collision and scratch on the surface.
What is the difference between SPV490 and Q345R?
SPV490 complies with Japanese standards, while Q345R complies with Chinese standards. SPV490 has higher yield strength. Q345R is widely used in China, while SPV490 is more used in equipment imported from Japan or joint ventures.
Can SPV490 be used to manufacture boiler drums?
Yes, SPV490 is suitable for manufacturing boiler drums. Boiler drums bear high pressure and temperature, and SPV490's excellent strength, toughness and weldability can meet the safety and performance requirements of boiler drums.
What is the surface quality requirement of SPV490 steel plates?
The surface of SPV490 steel plates should be clean, without defects such as cracks, folds, bubbles, scars and inclusions. Minor surface defects can be polished, but the thickness should not be less than the minimum allowable value.
Does SPV490 need to be normalized before welding?
Generally, SPV490 does not need to be normalized before welding if it has undergone normalizing treatment. But for thick plates or complex structures, preheating before welding can be carried out to reduce welding stress and avoid cracks.
What is the application of SPV490 in the chemical industry?
In the chemical industry, SPV490 is used to manufacture chemical reactors, storage tanks for chemical raw materials, pipelines and other equipment. It can resist the pressure of chemical media and ensure the safe operation of chemical production.
What is the elongation of SPV490?
The elongation of SPV490 is not less than 20%. Elongation is an important index reflecting the plastic properties of steel plates, indicating that the steel plate can undergo a certain℃of plastic deformation before breaking.
Can SPV490 be used in high-pressure gas cylinders?
Yes, SPV490 can be used to manufacture high-pressure gas cylinders. Its high yield strength and good toughness can ensure that the gas cylinder can bear high-pressure gas and is not easy to explode, meeting the safety standards of gas cylinders.
What are the main advantages of SPV490 compared with ordinary carbon steel?
Compared with ordinary carbon steel, SPV490 has higher strength, better toughness and weldability. It can reduce the thickness of steel plates in equipment manufacturing, save materials, and improve the safety and service life of equipment.