High-Quality ER304H Stainless Steel Welding Wire for Industrial Use

• Customization: Available
• Type: Rolling Wire
• Material: CO2
• Model NO.: ER304H
• Flux Containing: Not Containing Flux
• Slag Characteristic: Acidic
• Extended Length: >20mm
• Tensile Strength: ≥550 MPa
• Yield Strength: ≥363 MPa
• Elongation: ≥32%
• Hardness: ≤343 HBW
• Transport Package: 1kg/5kg/12.5/15kg/Spool
• Specification: 0.6/0.8/1.0/1.2/1.6/2.0/3.2/4.0mm
• Trademark: Jiuzhou
• Origin: China
• HS Code: 7223000
• Production Capacity: 200000kg/Year
• Package Size: 30.10cm * 30.10cm * 11.50cm
• Package Gross Weight: 16.000kg

Product Description

ER304H is an austenitic stainless steel solid wire designed for high-temperature applications, particularly in MIG (GMAW) and TIG (GTAW) welding. Below is a detailed technical and functional profile:

1. Classification & Standards

International Designations:

AWS A5.9: ER304H

Chinese Standard: YB/T 5092-2005 H0Cr18Ni9

Material Type: Austenitic stainless steel with high carbon content (0.04-0.10%) for enhanced high-temperature strength .

2. Chemical Composition

Typical composition (wt%) :

 

Note: Higher carbon (vs. ER304) improves creep resistance at >500°C.

3. Key Characteristics

High-Temperature Performance:

Retains tensile strength up to 600°C with minimal degradation .

Superior creep rupture strength (20% higher than TP347H) due to fine Cu/Nb precipitates.

Weldability:

Smooth arc stability, minimal spatter, and easy slag removal.

Suitable for all-position welding.

Corrosion Resistance: Good resistance to oxidation and steam corrosion in boiler environments.

4. Mechanical Properties

As-Welded State:

Property Value

Tensile Strength ≥550 MPa

Yield Strength ≥363 MPa

Elongation ≥32%

Hardness ≤343 HBW

Impact Toughness: ≥40J at 0°C after aging.

5. Primary Applications

Power Generation:

Superheater/reheater tubes in ultra-supercritical boilers (operating at 600-650°C).

Heat exchangers and turbine components .

Industrial Equipment:

High-temperature valves, pipelines, and food processing machinery.

Dissimilar Metal Joining:

Welds austenitic manganese steel to carbon steel castings/forgings.

6. Welding Procedures

Critical Parameters:

Shielding Gas:

MIG: Ar + 2% O2 (20-25 L/min) to stabilize the arc and improve wetting.

TIG: Pure Ar (99.99% purity, 8-15 L/min).

Preheat/Interpass Temp.: ≤150°C to control heat input and avoid hot cracking.

Type	Application	Chemical Composition	Mechanical Properties	Diameter(mm)	Net weight(kg)	Dia of spool(mm)	Dia(mm)
ER304	18Cr-8Ni	C:0.064% Mn:1.65% Si:0.42% Ni:8.33% Cr:17.10%	Mpa 1200	0.08-0.45	5/10/15/20	100/270/300	MIG:0.6-1.6 TIG:1.0-5.0
ER304L	17Cr-8Ni	C:0.028% Mn:1.65% Si:0.42% Ni:8.33% Cr:17.10%	Mpa 1200	0.08-4.5	5/10/15/20	100/270/300	MIG:0.6-1.6 TIG:1.0-5.0
ER308	19Cr-9Ni	C:0.064% Mn:1.65% Si:0.42% Ni:10.33% Cr:20.10%	Mpa 1200	0.08-4.5	5/10/15/20	100/270/300	MIG:0.6-1.6 TIG:1.0-5.0
ER308L	20Cr-9Ni	C:0.024% Mn:1.65% Si:0.42% Ni:10.33% Cr:20.10%	Mpa 1200	0.8-4.5	5/12.5/15/20	100/270/300	MIG:0.6-1.6 TIG:1.0-5.0
ER309	20Cr-13Ni	C:0.064% Mn:1.65% Si:0.42% Ni:14.33% Cr:20.10%	Mpa 1200	0.08-4.5	5/10/15/20	100/270/300	MIG:0.6-1.6 TIG:1.0-5.0
ER309L	20Cr-14Ni	C:0.024% Mn:1.65% Si:0.42% Ni:14.33% Cr:20.10%	Mpa 1200	0.08-4.5	5/10/15/20	100/270/300	MIG:0.6-1.6 TIG:1.0-5.0
ER309Lsi	20Cr-14Ni	C:0.024% Mn:1.65% Si:1.02% Ni:14.33% Cr:20.10%	Mpa1200	0.08-4.5	5/10/15/20	100/270/300	MIG:0.6-1.6 TIG:1.0-5.0
ER321	16Cr-7Ni	C:0.064% Mn:1.65% Si:0.42% Ni:8.33% Cr:17.10% Ti0.73	Mpa 1200	0.08-4.5	5/10/15/20	100/270/300	MIG:0.6-1.6 TIG:1.0-5.0
ER347	16Cr-9Ni	C:0.064% Mn:1.65% Si:0.42% Ni:9.33% Cr:17.10% (Ta+Nb)(10*C)-10	Mpa 1200	0.08-4.5	5/10/15/20	100/270/300	MIG:0.6-1.6 TIG:1.0-5.0
ER347L	17Cr-9Ni	C:0.064% Mn:1.65% Si:0.42% Ni:9.33% Cr:17.10% (Ta+Nb)(10*C)-10	Mpa 1200	0.08-4.5	5/10/15/20	100/270/300	MIG:0.6-1.6 TIG:1.0-5.0
ER316	16Cr-9Ni	C:0.064% Mn:1.65% Si:0.42% Ni:10.33% Cr:17.10% Mo2.03	Mpa 1200	0.08-4.5	5/10/15/20	100/270/300	MIG:0.6-1.6 TIG:1.0-5.0
ER316L	17Cr-9Ni	C:0.064% Mn:1.65% Si:0.42% Ni:10.33% Cr:17.10% Mo2.03	Mpa 1200	0.08-4.5	5/10/15/20	100/270/300	MIG:0.6-1.6 TIG:1.0-5.0
ER310	24Cr-19Ni	C:0.064% Mn:1.65% Si:0.42% Ni:20.33% Cr:25.10%	Mpa 1200	0.08-4.5	5/10/15/20	100/270/300	MIG:0.6-1.6 TIG:1.0-5.0