Alloys 304 (S30400) and 304L (S30403) stainless steels are variations of the 18 percent chromium – 8 percent nickel austenitic alloy, the most familiar and most frequently used alloy in the stainless steel family.
High strength, excellent corrosion resistance and minimized carbon content make Alloy 304 and 304L Stainless Steels useful for applications where welding is required. Uses include architectural mouldings and trim, welded components of chemical, textile, paper, pharmaceutical and chemical industry processing equipment.
Other advantages are its resistance to oxidation, excellent formability, ease of fabrication and cleaning, excellent strength to weight ratio and good toughness at cryogenic temperatures.
For severely corrosive environments, the lower content of Type 304L is preferred because of its greater immunity to intergranular corrosion.
Chemical Composition (% by weight)
304 | 304L | |||
Element | Min | Max | Min | Max |
C | - | 0.08 | - | 0.08 |
Mn | - | 2 | - | 2 |
Ni | 8 | 10.5 | 8 | 12 |
Cr | 18 | 20 | 18 | 20 |
S | - | 0.03 | - | 0.03 |
N | - | 0.1 | - | 0.1 |
Si | - | 0.75 | - | 0.75 |
P | - | 0.045 | - | 0.045 |
Physical Properties
Specific Heat (0-100°C) | 500 | J.kg-1.°K-1 |
Thermal Conductivity | 16.2 | W.m -1.°K-1 |
Thermal Expansion | 17.2 | μm/μm/°C |
Modulus Elasticity | 19.3 | GPa |
Electrical Resistivity | 7.23 | Ohm-cm |
Density | 8 | g/cm3 |
Typical Applications
Moisture separator reheaters
Feedwater tubes
Stator bars
Heat exchangers
304 Chemical composition: | ||||||
C | Si | Mn | Cr | Ni | S | P |
≤0.07 | ≤1.0 | ≤2.0 | 18.0~20.0 | 8.0~11.0 | ≤0.03 | ≤0.035 |
mechanical properties: | ||||||
Tensile strength σb (MPa) | Conditions yield strength 0.2 sigma (MPa) | Elongation δ5 (%) | Section shrinkageψ (%) | Hardness | ||
520 | 205 | 40 | 60 | ≤187HB ≤90HRB ≤200HV |
C | S | Mn | P | S | Ni | Cr | Mo | |
201 | ≤0.15 | ≤1.00 | ≤5.5-7.0 | ≤0.060 | ≤0.030 | 3.50-5.50 | 16.00-18.00 | |
202 | ≤0.15 | ≤1.00 | ≤7.50-10.00 | ≤0.060 | ≤0.030 | 4.0-6.0 | 17.0-19.0 | --- |
304 | ≤0.07 | ≤1.00 | ≤2.00 | ≤0.035 | ≤0.030 | 8.00-11.00 | 17.00-19.00 | --- |
304L | ≤0.03 | ≤1.00 | ≤2.00 | ≤0.035 | ≤0.030 | 8.00-12.00 | 18.00-20.00 | --- |
316 | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.035 | ≤0.030 | 10.00-14.00 | 16.00-18.50 | 2 |
316L | ≤0.03 | ≤1.00 | ≤2.00 | ≤0.035 | ≤0.030 | 12.00-15.00 | 16.00-18.00 | 2 |
1) Fast delivery time.
2) High quality, quantity is with preferential treatment.
3) We can process to different finish you request.
4) Main distributor and gold supplier.
5) 800 Tons/Month, high production capability will short your wait time.
6) Tisco, Jisco, Baoxin, Baosteel and other famous brand.
7) Good quality with reasonable price.
8) Buyer's Specification Accepted.
9) Experienced R & D Department.
We are honored to offer you samples ( A4 paper size will be free)
Interleave paper, Waterproof paper,metal belt pack the sheet, wooden pallet.
Normally 7 day after deposit received or L/C at sight.