What is the difference between 1.4841 and 1.4845 stainless steel?

What material is 1.4845 equivalent to?

310S stainless steel grade, which is also know as 1.4845 or 310s is a stainless grade which is commonly used in very high temperature envireoments. This grade is written as 1.4845 or X8CrNi25-21 according to EN norm and it is written as UNS S31008 according to UNS norm.

 

What is 1.4841 material equivalent to?

AISI 310 is an austenitic stainless steel, also known as 1.4841, BS 314S25, Inox 310 and X15CrNiSi25-21. The material is characterised by good heat resistance and strength at high temperatures.

 

What is 1.4542 stainless steel equivalent to?
1.4542 stainless steel is equivalent to 17-4 PH, AISI 630, and UNS S17400. It is a precipitation-hardening, martensitic stainless steel known for its high strength, toughness, and good corrosion resistance.

 

1.4841 vs 1.4845 stainless steel: Key Difference

1.4845 (310S) is a low-carbon version of 1.4841 (310). It offers better weldability and less risk of sensitization, while 1.4841 performs slightly better under extreme heat exposure.

Grade	EN Number	AISI Equivalent	UNS Number	Main Feature
1.4841	X15CrNiSi25-21	AISI 310	UNS S31000	Excellent oxidation resistance up to 1100°C
1.4845	X8CrNi25-21	AISI 310S	UNS S31008	Lower carbon for better weldability and less carbide precipitation

 

1.4841 vs 1.4845 stainless steel:  Chemical Composition

Both contain high Cr and Ni for oxidation resistance, but 1.4845 has less carbon, improving weldability and resistance to intergranular corrosion.

Element	1.4841 (AISI 310)	1.4845 (AISI 310S)
Carbon (C)	≤ 0.20%	≤ 0.08%
Chromium (Cr)	24.0–26.0%	24.0–26.0%
Nickel (Ni)	19.0–22.0%	19.0–22.0%
Silicon (Si)	≤ 1.5%	≤ 1.5%
Manganese (Mn)	≤ 2.0%	≤ 2.0%
Sulfur (S)	≤ 0.015%	≤ 0.015%
Phosphorus (P)	≤ 0.045%	≤ 0.045%

1.4841 vs 1.4845 stainless steel: Mechanical Properties

Property	1.4841	1.4845
Density	7.9 g/cm³	7.9 g/cm³
Tensile Strength	500–750 MPa	500–700 MPa
Yield Strength	≥ 210 MPa	≥ 200 MPa
Elongation (A5)	≥ 40%	≥ 40%
Hardness (HB)	≤ 215	≤ 200

1.4841 vs 1.4845 stainless steel: Temperature & Heat Resistance

Condition	1.4841	1.4845
Maximum Continuous Service Temperature (Air)	1100°C	1050°C
Short-term Exposure	Up to 1150°C	Up to 1100°C
Scaling Resistance	Excellent	Excellent

Key Note:If your component is exposed to continuous high heat (>1050°C), choose 1.4841.If your component requires welding or cyclic heating, choose 1.4845 (310S) to avoid carbide precipitation.

 

Corrosion & Oxidation Resistance
Both 1.4841 and 1.4845 perform well in oxidizing atmospheres, carburizing environments, and thermal cycling.However:1.4845 (310S) offers better protection against intergranular corrosion after welding.1.4841 (310) resists oxidation and scaling slightly better in dry air above 1050°C.
Avoid prolonged exposure in reducing or sulfur-containing atmospheres, as both grades are not ideal for those environments.

 

Are 1.4841 and 1.4845 magnetic?
 Both are non-magnetic in the annealed condition but may become slightly magnetic after cold work.

 

At Gnee Stainless, we maintain large inventories of both 1.4841 and 1.4845 stainless steel plates, pipes, and bars in stock for immediate delivery.

Price Range: USD $3,200 – $3,800 per ton depending on size, finish, and order quantity.

MOQ: 1 ton (custom sizes available).

Delivery Time: 7–15 working days worldwide.

Certification: ISO, SGS, BV, EN 10204 3.1 / 3.2 available.

Payment Terms: T/T, L/C, or flexible options.

Email: sales@gneestainless.com

Gnee ensures strict quality inspection, competitive pricing, and secure export packaging (pallets, wooden boxes, or moisture-proof wrapping) to protect your order during transit.

roduct Data Table (Common Stock Sizes)

Form	Thickness / Diameter	Length	Standard	Finish
Plate	3mm – 100mm	2000–6000mm	ASTM A240 / EN 10095	No.1 / 2B / Polished
Sheet	0.5mm – 6mm	1000×2000mm / 1250×2500mm	ASTM A240	BA / 2B / HL
Pipe	1/2" – 24"	Up to 6 meters	ASTM A312 / EN 10216-5	Annealed / Pickled
Bar	6mm – 300mm	2 – 6 meters	ASTM A276	Bright / Polished

All materials supplied by Gnee come with EN 10204 3.1 Mill Test Certificates and meet ASTM, EN, and DIN standards.