What is the yield strength of 1.4401 stainless steel pipe?

What is the 1.4401 material pipe specification?
EN 1.4401 grade 316 stainless steel (16% chromium, 10% nickel, and 2% molybdenum) is the second most important austenitic stainless steel compared to 304. The added molybdenum and higher nickel content of 316 give it greater corrosion resistance in many aggressive environments compared to 304. 1.4401 stainless steel pipe is available in both seamless and welded forms in a variety of sizes and surface treatments.

 

316 (1.4401) Chemical Composition
Grade	C	Mn	P	S	Si	Cr	Ni	Mo
316 (1.4401)	%0.08max	%2.0	%0.045	%0.030	%1.0	%16.0-18.0	%10.0- 14.0	%2.0-3.0

 

Mechanical Properties of ASTM A213 TP316 / TP 316L / TP316H Stainless Steel SMLS Pipe in the Annealed Condition

			Tensile Strength	Yield Strength
Alloy	UNS	Spec.	MPa	ksi	ksi	MPa	Elongation in 2 inch (min.) %	Grain Size Req.	Max. Hardness HRB Rockwell
TP316	S31600	A312	515	75	30	205	35	-	90 HRB
TP316L	S31603	A213	485	70	25	170	35	-	90 HRB
TP316H	S31609	-	-	-	-	-	-	7 or coa rser	-

 

What is the yield strength of 1.4401 stainless steel pipe?

The minimum yield strength (0.2% yield strength) of 1.4401 (AISI 316) stainless steel pipe is typically 205 MPa (approximately 30,000 psi). This value represents the point at which the steel begins to permanently deform when subjected to stress.

 

What is the hardness of 1.4401 stainless steel pipe?

The typical hardness of a 1.4401 (EN 1.4401 or 316) stainless steel pipe is a maximum of 217 Brinell or 95 Rockwell B. This is a characteristic of austenitic stainless steels and can vary slightly depending on the specific manufacturing standards and process of the pipe

 

​​Welding​​

​​Moderate weldability​​ – Suitable for TIG and arc welding; limited suitability for submerged arc/gas fusion welding

​​Filler material​​: Recommended 1.4430; post-weld solution annealing (1020-1120°C) required

​​Corrosion impact​​: Chromium carbide formation may reduce intergranular corrosion resistance

 

​​Forging​​

​​Forging temperature​​: Start at 1150-1180°C, finish ≥950°C (water/air cooling)

​​Key note​​: Remove scale to maintain corrosion resistance; suitable for open-die/drop forging

 

​​Heat Treatment & Hot Forming​​

​​Solution treatment​​: 1020-1120°C (water/air cooling)

​​Hot forming​​: 1200-900°C (air cooling)