Martensitic Stainless Steels

These are the most regularly used forms of stainless steels. Austenitic stainless steels tend to have a high chromium content compared to different steel alloys, giving them the next resistance to corrosion. Another frequent characteristic of austenitic stainless-steel alloys is that they tend to be non-magnetic—although they might turn into magnetic after cold working. The four hundred sequence group of stainless steels sometimes have an eleven% chromium and 1% manganese improve, above the 300 series group.

astm 304

We have thousands tons stock of stainless steel sheet and coil with various size and grade,mainly include austenitic stainless steel, martens stainless steel (including precipitation hardened stainless steel sheet & coil), ferritic stainless steel, and duplex stainless steel.

Characteristics of Stainless Steel Sheet and Plate:
High corrosion resistance
High strength
High toughness and impact resistance
Temperature resistance
High workability, including machining, stamping, fabricating and welding
Smooth surface finish that can be easily clean

Martensitic stainless steels are characterized by excessive energy and hardness in the warmth treated condition. We offer a variety of martensitic stainless alloys which comprise 11 – 17% chromium with 0.15 – 0.sixty three% carbon. Martensitic grades are magnetic in both the annealed and hardened situation.

The addition of small quantities of nickel enhances the corrosion resistance and toughness, and the addition of sulfur in this alloy improves the machinability. They have good mechanical properties and moderate corrosion resistance, and they’re ferromagnetic. Stress relieving of Ferritic or martensitic stainless steels will temper weld and warmth affected zones, in addition to restoration of corrosion resistance in some sorts. Annealing temperatures are relatively low for these stainless-steel grades.

• Our martensitic stainless steels are provided in the as-annealed situation, ready for blanking, bending and forming followed by warmth remedy to obtain customer specific properties.
• We supply a variety of martensitic stainless alloys which comprise eleven – 17% chromium with 0.15 – 0.sixty three% carbon.
• Martensitic grades are magnetic in each the annealed and hardened condition.
• Martensitic stainless steels are characterised by excessive energy and hardness in the heat handled situation.

We produce ASTM/ASME Grade 304, Grade 304L,304h, 316, 316L, 316H, 316TI, 321, 321H, 309S, 309H, 310S, 310H, 410S, 2205, 904L, 2507, 254, gh3030, 625, 253MA, S30815, 317L, Type 317, 316lN, 8020, 800, 800H, C276, S32304 and others special requirement stainless steel grade.

This chrome steel collection tends to be prone to rust and corrosion underneath some circumstances though warmth-treating will harden them. The four hundred series of stainless steels have a better carbon content material, giving it a martensitic crystalline construction that provides the end product with excessive-strength and excessive-put on resistance.

Stock Thickness: 0.1-200.0mm
Production thickness: 0.5.0-200mm
Width: 600-3900mm
Length: 1000-12000mm
Grade:
200 series: 201,202
300 series: 301,304,304L,304H,309,309S,310S,316L,316Ti,321,321H,330
400 series: 409,409l,410,420J1,420J2,430,436,439,440A/B/C
Duplex: 329,2205,2507,904L,2304
Surface: No.1,1D,2D,2B,NO.4/4K/hairline,satin,6k,BA,mirror/8K

Martensitic SS have a physique-centered tetragonal crystal construction. The Cr content in martensitic SS varies from 10.5% to 18%, and the carbon content may be higher than 1.2%.

When hardened and stress relieved, this material’s tensile energy jumps to roughly 1,586 MPa . When tensile power and impact resistance are the primary issues for an software, 420 stainless is a best choice. While not as strong as either of the austenitic alloys highlighted above, grade 430 chrome steel does have an particularly good resistance towards nitric acid.

Welding chrome steel could be very completely different than welding carbon steel, and may result in issues similar to intergranular corrosion, hot cracking and stress corrosion cracking. The most weldable stainless steels are sometimes in the austenitic group. When welding austenitic stainless steels, grades similar to 304L or 347 ought to be used. Grade 304L has decrease carbon whereas 347 has niobium stabilizers added to it which assist to discourage intergranular corrosion. Ferritic stainless steels similar to grade 430 or grade 439 are also readily weldable, as are Duplex stainless steels.