321/321L stainless steel 9.52*1.65 mm coiled tubing

Composition

Typical compositional ranges for grade 321 stainless sheets of steel are given in table 1.

Table 1. Composition ranges for 321-grade stainless steel

Grade		C	Mn	Si	P	S	Cr	Mo	Ni	N	Other
321	min. max	- 0.08	2.00	0.75	0.045	0.030	17.0 19.0	-	9.0 12.0	0.10	Ti=5(C+N) 0.70
321H	min. max	0.04 0.10	2.00	0.75	0.045	0.030	17.0 19.0	-	9.0 12.0	-	Ti=4(C+N) 0.70
347	min. max	0.08	2.00	0.75	0.045	0.030	17.0 19.0	-	9.0 13.0	-	Nb=10(C+N) 1.0

Typical mechanical properties for grade 321 stainless sheets of steel are given in table 2.

Table 2. Mechanical properties of 321-grade stainless steel

Grade	Tensile Strength (MPa) min	Yield Strength 0.2% Proof (MPa) min	Elongation (% in 50 mm) min	Hardness
Grade	Tensile Strength (MPa) min	Yield Strength 0.2% Proof (MPa) min	Elongation (% in 50 mm) min	Rockwell B (HR B) max	Brinell (HB) max
321	515	205	40	95	217
321H	515	205	40	95	217
347	515	205	40	92	201

Typical physical properties for annealed grade 321 stainless sheets of steel are given in table 3.

Table 3. Physical properties of 321-grade stainless steel in the annealed condition

Grade	Density (kg/m3)	Elastic Modulus (GPa)	Mean Coefficient of Thermal Expansion (μm/m/°C)			Thermal Conductivity (W/m.K)		Specific Heat 0-100 °C (J/kg.K)	Electrical Resistivity (nΩ.m)
Grade	Density (kg/m3)	Elastic Modulus (GPa)	0-100 °C	0-315 °C	0-538 °C	at 100 °C	at 500 °C	Specific Heat 0-100 °C (J/kg.K)	Electrical Resistivity (nΩ.m)
321	8027	193	16.6	17.2	18.6	16.1	22.2	500	720

321/321L stainless steel 9.52*1.65 mm coiled tubing

Approximate grade comparisons for 321 stainless sheets of steel are given in table 4.

Table 4. Grade specifications for 321-grade stainless steel

Grade	UNS No	Old British		Euronorm		Swedish SS	Japanese JIS
Grade	UNS No	BS	En	No	Name	Swedish SS	Japanese JIS
321	S32100	321S31	58B, 58C	1.4541	X6CrNiTi18-10	2337	SUS 321
321H	S32109	321S51	-	1.4878	X10CrNiTi18-10	-	SUS 321H
347	S34700	347S31	58G	1.4550	X6CrNiNb18-10	2338	SUS 347

Typical compositional ranges for grade 321 stainless sheets of steel are given in table 1.

Table 1. Composition ranges for 321-grade stainless steel

Grade		C	Mn	Si	P	S	Cr	Mo	Ni	N	Other
321	min. max	- 0.08	2.00	0.75	0.045	0.030	17.0 19.0	-	9.0 12.0	0.10	Ti=5(C+N) 0.70
321H	min. max	0.04 0.10	2.00	0.75	0.045	0.030	17.0 19.0	-	9.0 12.0	-	Ti=4(C+N) 0.70
347	min. max	0.08	2.00	0.75	0.045	0.030	17.0 19.0	-	9.0 13.0	-	Nb=10(C+N) 1.0

321/321L stainless steel 9.52*1.65 mm coiled tubing

Typical mechanical properties for grade 321 stainless sheets of steel are given in table 2.

Table 2. Mechanical properties of 321-grade stainless steel

Grade	Tensile Strength (MPa) min	Yield Strength 0.2% Proof (MPa) min	Elongation (% in 50 mm) min	Hardness
Grade	Tensile Strength (MPa) min	Yield Strength 0.2% Proof (MPa) min	Elongation (% in 50 mm) min	Rockwell B (HR B) max	Brinell (HB) max
321	515	205	40	95	217
321H	515	205	40	95	217
347	515	205	40	92	201

Typical physical properties for annealed grade 321 stainless sheets of steel are given in table 3.

Table 3. Physical properties of 321-grade stainless steel in the annealed condition

Grade	Density (kg/m3)	Elastic Modulus (GPa)	Mean Coefficient of Thermal Expansion (μm/m/°C)			Thermal Conductivity (W/m.K)		Specific Heat 0-100 °C (J/kg.K)	Electrical Resistivity (nΩ.m)
Grade	Density (kg/m3)	Elastic Modulus (GPa)	0-100 °C	0-315 °C	0-538 °C	at 100 °C	at 500 °C	Specific Heat 0-100 °C (J/kg.K)	Electrical Resistivity (nΩ.m)
321	8027	193	16.6	17.2	18.6	16.1	22.2	500	720

321/321L stainless steel 9.52*1.65 mm coiled tubing

Approximate grade comparisons for 321 stainless sheets of steel are given in table 4.

Table 4. Grade specifications for 321-grade stainless steel

Grade	UNS No	Old British		Euronorm		Swedish SS	Japanese JIS
Grade	UNS No	BS	En	No	Name	Swedish SS	Japanese JIS
321	S32100	321S31	58B, 58C	1.4541	X6CrNiTi18-10	2337	SUS 321
321H	S32109	321S51	-	1.4878	X10CrNiTi18-10	-	SUS 321H
347	S34700	347S31	58G	1.4550	X6CrNiNb18-10	2338	SUS 347