1.4313 Hot Forged Flat Bar Stainless Steel Bar Steel in Warehouse Steel Strip Plate Used in High Pressure Pump Valve of Oil Industry Corrosion Resistant

• Customization: Available
• Standard: ASTM, AISI, GB, JIS, DIN, EN, Technical Agreement
• Grade: 1.4313
• Model NO.: S41500/1.4313/X3CrNiMo13-4/SUS F6NM
• Certification: ISO, Gjb
• Shape: Flat
• Technique: Hot Forged
• Surface Treatment: Bright
• Smelting Method: ESR-Electroslag Remelting
• Heat Treatment: Annealed or Q+T
• Surface: Bright
• Length: Limited or Random
• NDT: 100% Ut
• Transport Package: as Requirement
• Specification: thickness 80~800mm
• Trademark: SMTCO
• Origin: China
• HS Code: 7222190000
• Production Capacity: 10000t Per Year

Product Description

Product Description

Introduction

It is a martensitic-austenitic duplex stainless steel. Through precise control of chemical composition and heat treatment processes, it combines the high strength of martensite with the good toughness and corrosion resistance of austenite. Compared with conventional martensitic steels, the presence of the austenitic phase reduces the tendency for welding cracks. Its impact toughness is significantly superior to that of single-phase martensitic stainless steels. In terms of corrosion resistance, 04Cr13Ni5Mo exhibits markedly improved resistance to pitting and crevice corrosion in chloride environments, making it particularly suitable for marine applications, with corrosion resistance approaching that of 304 austenitic stainless steel. The material is characterized by a microstructure consisting of a martensitic matrix with 5–20% retained austenite dispersed within it. This duplex structure not only enhances the material's fracture toughness but also significantly reduces susceptibility to cold cracking during welding, resulting in better weldability than traditional martensitic stainless steels. However, to maintain phase balance, its heat treatment process is relatively complex, typically requiring precise control of solution temperature and cooling rate. Furthermore, while the addition of molybdenum improves corrosion resistance, it also increases the difficulty of hot working and material cost.

Applications

Owing to its excellent combination of strength, toughness, and corrosion resistance, it is widely used in various high-end engineering fields. In the energy equipment sector, the material is suitable for manufacturing key components in the hydropower industry, such as turbine runner blades, runners, and lower runner rings, as well as steam turbine blades and bolts in the thermal power industry. In the nuclear power industry, 04Cr13Ni5Mo is used to fabricate critical pressure-retaining components in the secondary circuit system of nuclear power plants, including pump casings and valve bodies. In marine engineering, this steel grade is applied to the manufacture of offshore platform connectors and high-pressure pump bodies for seawater desalination equipment. In the petrochemical industry, it is commonly used to produce key moving parts such as acid-resistant pump shafts and compressor connecting rods. In military equipment manufacturing, it can be used for special components including marine propulsion shafting and submarine pressure hulls. Additionally, in the field of high-end equipment manufacturing, the material is used to produce large extruder plungers and heavy-duty machine tool guides, which require extremely high strength and toughness. For applications in extreme environments, with appropriate adjustments to the heat treatment process, the material can also serve as a structural material for polar equipment, retaining good toughness reserve at low temperatures.

Equivalent Grades Standards

Steel Grade	Specification	Specification Name
04Cr13Ni5Mo / S41595	GB/T 3280	Cold rolled stainless steel plate, sheet and strip
	GB/T 4237	Hot rolled stainless steel plate, sheet and strip
UNS S41500	ASTM A276/A276M	Standard specification for stainless steel bars and shapes
	ASTM A240/A240M	Standard specification for Cr and Cr-Ni stainless steel plate, sheet and strip for pressure vessels and for general applications
	ASTM A479/A479M	Standard Specification for Stainless Steel Bars and Shapes for Use in Boilers and other Pressure Vessels
1.4313 / X3CrNiMo13-4	EN 10088-2	Stainless Steel Part 2-Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for general purpose
	EN 10088-3	Stainless Steels Part 3-Technical delivery conditions for semi-finished products, bars, rods, wire, sections and bright products of corrosion resisting steels for general purposes
	EN 10272	Stainless steel bars for pressure purposes
SUS F 6NM	JIS G3214	Stainless steel forgings for pressure vessels

Chemical composition

Elements	C	Si	Mn	P	S	Ni	Cr	Mo	N
Content%	≤0.05	≤0.70	≤1.50	≤0.040	≤0.015	3.50~4.50	12.00~14.00	0.30~0.70	≥0.02
Products produced as per other specifications or technical agreements (if need) are available.

Typical delivery condition & mechanical properties

Delivery Condition	Mechanical Properties
	Rp0.2/(N/mm2)	Rm/(N/mm2)	A/%	Zb/%	AkV2d/J	HBW
Annealed	/	≤1100	/	/	/	≤320
Q+T 700	≥520	700~850	≥15	/	≥70	/
Q+T 780	≥620	780~980	≥15	/	≥70	/
Q+T 900	≥800	900~1100	≥12		≥50	/
Products produced as per other specifications or technical agreements (if need) are available.

Third party inspection report

FAQ

1. Are you a factory or trader?

-Factory, Shifang Xin'gong is a professional manufacturer with own smelting, forging, heat treatment and precision machining equipment, has own test lab.

-SMTCO is the only direct export department of Shifang Xin'gong.

2. Do you have stock?

-Yes, we have 4 stock warehouses located in Sichuan, Jiangsu and Guangdong province, with more than 3000 tons stock, including steel bars and plates/sheets of 9Cr18, 9Cr18Mo, 9Cr18MoV, 1.4313, 17-4PH, 15-5PH etc.

3. Customized production capability?

-Yes, we can conduct research & develop customized production according to special technical requirements and small batch.

4. How to guarantee the quality?

-4.1 Achieved certification of ISO 9001:2015 and GJB 9001C-2017. MTC according to EN 10204-3.1.

-4.2 Fully traceable in the entire production & inspection process. Inspection covers chemical composition analysis, mechanical property testing, macro and micro structure inspection, 100% ultrasonic testing (NDT), dimension and surface inspections, special requiremnets as required.

-4.3 The third party inspection before delivery is accepted.

5. MOQ and sample?

-1 kg for products in stock, max 3 tons for customized products.

-Sample or small trial batch are accepted.

6. Price level?

-Middle or little higher than market average, because of the complete quality control during the entire production process with more than 99.9% qualify rate.

7. Delivery time?

-7 days for stock – prepare export license and documents.

-65 days for new production – start from smelting.

8. Which port nearest?

-Shanghai port for transportation by sea, Chengdu or Suzhou railway station for transportation by train (China-Europe Railway Express). 

9. What is your positioning? 

-Better price and lower MOQ than large manufacturers, more professionalism and better quality control than small and medium-sized ones.

-Aim to be the most cost-effective one-stop solution provider for special stainless steel.

10. Core competitiveness?

-Sufficient stock & Small batch available.

-System-driven, fully traceable.

-Uphold standards, control processes.

-Demand-driven production, precision customization.

-Fully monitored by own lab, third-party inspection accepted.