Stainles Steel

Stainless Steel

Stainless steel is a highly durable, corrosion-resistant material widely used in piping, fabrication, and structural applications. Its excellent strength, hygienic properties, and resistance to high temperatures make it ideal for industries such as oil & gas, food processing, and pharmaceuticals. Available in various grades like 304, 316, and 310, it ensures long-term performance even in harsh environments. At Thobex, we offer stainless steel products manufactured to international standards for reliability and quality.

Standard	Specification Numbers
ASTM	A312, A376, A358, A269, A249, A403, A182, A351
ASME	SA312, SA376, SA358, SA269, SA249, SA403, SA182, SA351

Grade	C	Cr	Ni	Mo	Others
304	0.08	18.0 ~ 20.0	8.00 ~ 10.50	-	-
304L	~0.030	18.0 ~ 20.0	9.00 ~ 13.00	-	-
310S	~0.08	24.0 ~ 26.0	19.0 ~ 22.0	-	-
316	~0.08	16.0 ~ 18.0	10.0 ~ 14.0	2.00 ~ 3.00	-
316L	~0.08	16.0 ~ 18.0	12.0 ~ 15.0	2.00 ~ 3.00	-
316Ti	0.08	16.0 ~ 18.0	10.0 ~ 14.0	2.00 ~ 3.00	Ti 5xC% ~
317L	0.03	18.0 ~ 22.0	11.0 ~ 15.0	3.00 ~ 4.00	-
321	~0.08	17.0 ~ 19.0	9.00 ~ 13.0	-	Ti 5xC% ~
347	0.08	17.0 ~ 19.0	9.00 ~ 13.0	-	Nb 10xC% ~

Grade	Yield Strength (0.2%) (N/mm²)	Tensile Strength (N/mm²)	Elongation (%)	Hardness (Hv)
304	205~	520~	40~	~200
304L	175~	480~	40~	~200
310S	205~	520~	40~	~200
316	205~	520~	40~	~200
316L	175~	480~	40~	~200
316Ti	205~	520~	40~	~200
317L	175~	480~	40~	~200
321	205~	520~	40~	~200
347	205~	520~	40~	~200

Grade	Specific Heat (J/g °C)	Specific Gravity	Thermal Expansion Coefficient (W/m·°C, 20–100°C)	Thermal Conductivity (W/m·°C, 100°C)
304	0.50	7.93	17.3	16.3
304L	0.50	7.93	17.3	16.3
310S	0.50	7.98	15.9	14.2
316	0.50	7.98	15.9	16.3
316L	0.50	7.98	15.9	16.3
316Ti	0.50	7.98	15.9	16.3
317L	0.486	7.98	16.5	14.4
321	0.50	7.93	16.7	16.1
347	0.50	7.98	16.7	16.1