S904L Steel Plate

1. Standard: ASTM A240 / ASME SA240
2. Thickness: 0.3~100mm or as required
3. Width: 1000~2500mm or as required
4. Length: 0~12m or as required

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Product Introduction

S904L Steel Plate belongs to high alloy austenitic stainless steel, and its core advantage lies in its unique chemical composition ratio. Ss904l exhibits far superior performance in resistance to uniform corrosion, pitting corrosion, crevice corrosion, and intergranular corrosion compared to ordinary stainless steel. HT PIPE is a asme sa 239 904l plate supplier with 15+ export experience. Contact us for more information and quotes for free!

We offers 904l stainless steel in a variety of forms, including:

Bar
Wire
Sheet
Plate
Forgings
Pipe fittings
Flanges
Seamless & Welded pipe
Seamless Tube & Welded tube
Weld Rod

ss904l Stainless Steel Plate Standard

Specification	ASTM A240 / ASME SA240
Manufacturing Process	Hot Rolled (HR) / Cold Rolled (CR)
Thickness	0.6 MM TO 80 MM THICKNESS
Width	1250 MM / 1500 MM / 2000 MM / 04 Feet / 05 Feet and Custom Cut Width as Per Requirement
Length	2400 MM / 2420 MM / 6000 MM / 08 Feet / 10 Feet / Coil Cut and Custom Cut Length as Per Requirement
Surface Finish	2B, 2D, BA, Polished
Testing	NACE MR0175, Ultrasoung TEST, IGC TEST, Grain Size, Hardness, etc.
Value Added Services	Gas Cutting / Profiling / Rolling / Bending / Sheet Metal Fabrication / Machining / Heat Treatment
Material Test Certificate	EN10204 3.1, 3.2 / SGS, TUV, DNV, LLOYDS, ABS

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904l chenmical composition

Grade

904L

min.

max.

0.02

0.045

0.035

Corrosion resistance characteristics of 904L

1.4539 aisi Corrosion resistance to oxidizing media

The high content of chromium element in S904L Steel Plate forms a stable Cr ₂ O3 passivation film on the surface, which can effectively prevent the corrosion of the substrate by oxidizing media (such as nitric acid, chromic acid, oxidizing salt solution, etc.). In a 50% nitric acid solution, the corrosion rate at room temperature is ≤ 0.1mm/year. In a 20% nitric acid solution at 80 ℃, the corrosion rate is ≤ 0.5mm/year.

904l metal alloy Corrosion resistance in reducing media

The synergistic effect of nickel and copper elements gives S904L Steel Plate excellent corrosion resistance in reducing media. In a 10% sulfuric acid solution, the corrosion rate is ≤ 0.1mm/year at room temperature, and ≤ 0.3mm/year in a 5% sulfuric acid solution at 60 ℃.

904l uns Corrosion resistance to chloride ions

The pitting potential of 904L (in 3.5% NaCl solution, 25 ℃) is about 1.0V (SCE), much higher than that of 316L stainless steel (about 0.4V (SCE)). The critical temperature for crevice corrosion is about 60 ℃ in a 3.5% NaCl solution, while it is about 30 ℃ for 316L stainless steel.

Resistance to intergranular corrosion

The extremely low carbon content (≤ 0.02%) prevents the formation of Cr ₂ ∝ C ₆ carbides by the combination of carbon and chromium during welding or high-temperature heating, thereby preventing the occurrence of intergranular corrosion.

Processing performance characteristics of 904L

din 1.4539 Cold working performance

During the cold working process, the S904L Steel Plate will undergo work hardening. With the increase of machining deformation, the strength and hardness increase, while the plasticity decreases. When the deformation during processing is large (such as exceeding 30%), intermediate solution treatment (heating to 1100-1150 ℃, rapid water cooling after insulation) is required to restore the plasticity of the material and facilitate subsequent processing.

n08904 material Hot processing performance

The hot processing temperature range of 904L is 1150-1250 ℃. When heating, the temperature should be slowly increased to avoid excessive temperature difference causing material cracking. The insulation time is determined according to the thickness of the material, generally 1-2 minutes/mm.

stainless 904 Welding performance

S904L Steel Plate can be welded using arc welding (manual arc welding, submerged arc welding, gas shielded welding), resistance welding and other welding methods. It is recommended to use matching 904L welding wire (such as ER385) or welding rod (such as E385-16) during welding to avoid using dissimilar materials for welding, which may result in a decrease in corrosion resistance in the weld area.