Steel Options

Roscoe Moss Company manufactures water well casing and screen in a variety of corrosion resistant materials. Factors such as water quality, strength requirements, and expected well life all play an important role in determining what steel type is best for each specific job.

Duplex Stainless Steel Types 2101, 2205, 2507

Duplex stainless steel is the appropriate material for specific environments where corrosion is extreme. Typical applications include brackish water, desalination, and brine injection. Duplex stainless steel offers superior corrosion resistance combined with high strength.

Stainless Steel Types 304/304L and 316/316L

Stainless steel is used for wells where corrosive elements limit the effective life of carbon, copper-bearing and HSLA steels. Stainless steel is particularly resistant to detrimental effects of hydrogen sulfide, carbon dioxide and saline water. Removal of incrustation by acidizing, a method not recommended for some other steels, may be accomplished in stainless steel screens.

High-Strength Low-Alloy (HSLA) Steel

Corrosion-resistant, high-strength low-alloy steel casing and screen is designed and produced for use in water wells when corrosion resistance, strength and durability are important requirements. Stronger than mild or copper-bearing steel, HSLA casing and screen is an excellent choice for deep, large-diameter wells. Although more corrosion resistant than mild or copper-bearing steel, in wells where severe corrosive elements are present, an analysis must be made before selecting this material over stainless steel.

Copper-Bearing Steel

Used for wells where resistance to corrosion is an important requirement. Although not as corrosion-resistant as HSLA or stainless steel, copper-bearing casing and screen last significantly longer than mild steel products.

Mild Steel

Also referred to as Low Carbon Steel, this is used for wells when short-term economic considerations are a priority.

Steel Type Chart
 Steel TypeManufacturing SpecificationYield Strength (psi)Tensile Strength (psi)PRE*
Duplex Stainless Steels2507ASTM 92880,000110,00042
2205ASTM 92865,00095,00035
2101ASTM 92865,00094,00026
Austenitic Stainless Steels316LASTM 77830,00075,00024
304LASTM 77830,00075,00018
Carbon SteelsHigh Strength Low Alloy (A606 Type 4)ASTM 13950,00070,000N/A
Copper BearingASTM 139 B35,00060,000N/A
Mild SteelASTM 139 B35,00060,000N/A

*PRE = %Cr + 3.3x%Mo + 16x%N

Steel Type Chart 2
Mild SteelCopper BearingHigh Strength Low AlloySST 304L
Image Of Finished ProductLow CarbonCopper BearingHigh Strength Low AlloySST 304L
Corrosion Resistancex4x9x244x
Physical Properties

Iron > 98%

Minimum 0.2% Cu

Min. Amounts of Cu, Ni, Cr

18-20% Cr
8-13% Ni

Yield Strength

35,000 lbs/in2

35,000 lbs/in2

50,000 lbs/in2

30,000 lbs/in2