Family/Applications STAINLESS STEEL PRODUCTS • … · 2019-09-03 · SSINA Technical Training...

SSINA Technical Training 2019

• Basics • Manufacturing• Family/Applications

EDWARD J. BLOTED BLOT & ASSOCIATES, INC.12 High StreetBrunswick, Maine 04011

Off. (207)798-6805Cell (330) 268-9102Email: eblot@aol.com

STAINLESS STEEL PRODUCTS TECHNICAL TRAINING SEMINARFOR IMPORT CLASSIFICATIONS

BASICS

ALLOY STEELS

STAINLESS STEELS IN THE ALLOY FAMILY

CARBON STEELS

NICKEL BASE ALLOYS(ALSO CHAPTER 75)

STAINLESS STEELS

(HTS CHAPTER 72 IRON & STEEL)

WHAT MAKES STEEL (IRON & CARBON)

STAINLESS

EFFECT OF CHROMIUM ON ATMOSPHERIC

CORROSION RESISTANCE

% CHROMIUM10.5 %

STAINLESS STEEL RANGE (HTS 7218 – 7223)

R(PREDOMINATELY IRON & CHROMIUM)

CORROSION PROTECTION

CHROMIUM OXIDE FILM

BASE METAL WITH 10.5% MIN. CHROME

THE CHROMIUM OXIDE FILM PREVENTS FURTHER DIFFUSION OF OXYGEN ON THE SURFACE, THUS PROTECTING IRON IN THE MATRIX FROM RUSTING.

STAINLESS STEEL

SULFUR MANGANESE ALUMINUM COPPER COLUMBIUM SILICON TITANIUM CALCIUM SELENIUM

ALLOYING ELEMENTSCHROMIUM CORROSION & SCALING RESISTANCE

CARBON (1.2% MAX) HARDNESS

NICKEL ACID CORROSION RESISTANCE, FORMABILITY, AND WELDABILITY

MOLYBDENUM PITTING CORROSION RESISTANCE AND STRENGTH

NITROGEN CREVICE CORROSION RESISTANCE AND STRENGTH

• Mechanical Properties

WHY STAINLESS • Corrosion Resistance

MECHANICAL PROPERTIES

YIELD STRENGTH

ULTIMATE TENSILE STRENGTH

% ELONGATION

REDUCTION OF AREA

HARDNESS BENDIMPACT

STRENGTH DUCTILITY

NOTE: AS STRENGTH INCREASES, DUCTILITY DECREASES

TENSILE TESTING EQUIPMENT

• Corrosion Resistance

• Physical Properties

WHY STAINLESS

PHYSICAL PROPERTIES

include ..... MAGNETIC PERMEABILITYTHERMAL EXPANSION HEAT CONDUCTIVITYDENSITY

• Corrosion Resistance

• Physical Properties

• Appearance, Hygienic, and Recyclable

• Life Cycle Cost Benefit

WHY STAINLESS

• Ease of Fabrication

SERVICE LIFE / REPLACEMENT COST

STAINLESS STEEL

CARBON

LIFE CYCLE COST BENEFIT

Semi-finished Stainless Sold To Specs with Only Chemistry and Capability on Mill Test Reports – No Mech Props

Generally >150mm Thick x 900mm Wide and Width > 4 x Thickness(7218.91.00.60)

Ingots (Tapered Cast Blocks)(7218.10.00)

Generally 100mm -600 mm Squares, or Rounds (7218.99.00)

BILLETS

STAINLESS SEMI-FINISHEDHTS 7218

Generally Rectangles > 150mm Thickand Width < 4 x Thickness Cross Section > 232 cm2) =(7218.91.00.30)

BLOOMS

INGOTSINDUSTRY TERMINOLOGY HTS TERMINOLOGY

STAINLESS PLATEHTS 7219 & 7220 – FLAT ROLLED

• 4.75 mm Thick Nominal ,Equal/Greater than 254 mm Wide• Flat Plate Mill (Discrete), and Continuous Mill Plate Coil• Annealed or Heat Treated, and Pickled/Descaled• 600 mm and Wider - 7219, < 600 mm - 7220• Not Further Worked Than Hot Rolled, Cold Rolled, or Other• Smooth Flat Surface - Straight Square Edges• Mill Test Report (Chem & Mech Props)

NOTE: Items in italic font are in scope definition for orders, but not HTS

STAINLESS SHEET/STRIPHTS 7219 & 7220 – FLAT ROLLED

• Under 4.75 mm Thick• 600 mm and Wider (Sheet) - 7219• Greater Than 9.5 mm to 600 mm Wide (Strip) - 7220• Annealed or Heat Treated, and Pickled/Descaled • Not Further Worked Than Hot Rolled, Cold Rolled, or Other• Coil and Cut Length (Uncoiled)

• Mill Test Report (Chem & Mech Props)

STAINLESS BAR/ANGLEHTS 7222

• Straight Lengths = Scope Definition - Bars & Rods = HTS Definition• Not Further Worked Than Hot Rolled or Cold Finished = Same Product• Rounds, Hexagons, Squares, Flats, Shapes - (7222.11, .19 .20 and .30)• Angles & Structural Shapes (7222.40) • Rebar - Scope Definition not in HTS (Logical 7222.11.00.57/59)• Specified Uniform Dimensional Tolerances• Mill Test Report (Chem and Mech Props)

• Irregularly Wound Hot Rolled Coils • Hot Rolled Annealed and/or Pickled/Descaled• Rounds or Shapes Generally 5.0mm – 32mm

STAINLESS ROD HTS 7221

• Mill Test Report (Chem and Mech Props)

STAINLESS WIRE HTS 7223

• Tightly Wound Coils• Cold Drawn Or Cold Rolled from Rod• Rounds (7223.00.10)• Flats (7223.00.50)• Shapes (7223.00.90)• Specified Uniform Dimensional Tolerances• Mill Test Report (Chem and Mech Props)

Specification AMS-5639, ASTM-A-479

WHAT’S IN A NAMEAISI Designation 304LUNS Number S30403Composition 18-8Trade Names Project 70 +Application Machining-Forging-

Redraw

Mill Test Report 19 CFR 141.89 with CBP CF 7501

MANUFACTURING

HOT ROLLING

DISCRETE PLATES(7219.21, .22 & 7220.11)

+ANNEALPICKLE

ANNEAL PICKLE

COILED PLATES

CAST SLAB=Melt +

CASTINGAOD+

MAKING A STAINLESS PLATE4.75 mm Thick & Larger

(7219.11, .12 & 7220.11)

- HTS 7219 > 600mm- HTS 7220 < 600mm

(Not Further Worked Than Hot Rolled)

NOTE: AOD = ARGON OXYGEN DECARBORIZATION

STAINLESS SCRAP +

RAW MATERIALSADDED TO EAF

STAINLESS HOT ROLLED SHEET

CAST SLAB

=+CASTINGAOD

HOT ROLLING

+ANNEAL PICKLE

Less Than 4.75 mm Thick (HTS 7219.13, .14, .23, .24) Not Further Worked Than Hot Rolled

STAINLESS SCRAP +

(Not Further Worked Than Hot Rolled)

STAINLESS COLD ROLLED SHEET/STRIPLess Than 4.75 mm Thick (HTS 7219 & 7220)

Not Further Worked Than Cold Rolled or Other

=COLD ROLLING

ANNEAL PICKLE+HOT ROLLED SHEET

COLD ROLLED 2D SHEET

STRIP===

POLISH

SENDZIMIR MILL

2B SHEET >600 MM WIDE (7219.32, .33, .34, .35, .90)

< 600 MM WIDE(7220.20, .90)

MAKING A STAINLESS BILLETHTS 7218.99.00

Melt =INGOT

++ ROLLED BILLET

Melt =VARorESR

++REMELT

VAR OR ESR BILLET

+AOD NOTE: VAR = VACUUM ARC REMELT

ESR = ELECTROSLAG REMELT

Melt =+

CASTING

CAST BILLET

ELECTRIC ARC FURNACE

STAINLESS SCRAP +

RAW MATERIALS

FORGEINGOT

FORGED ROUND BAR

ANNEAL+STRAIGHTEN

Generally 152.4 mm and Larger, Not Further WorkedThan Hot Worked (HTS 7222.11.00.82 & .84)

HOT FORGED

STAINLESS SCRAP +

HOT ROLL

STRAIGHTEN

ROLLED ROUND BARGenerally 18 mm – 152.4 mm Diameter (HTS 7222.11.00.57 & .59)

Not Further Worked Than Hot Rolled

BILLET/BLOOM

+ + ANNEAL

+ HOT ROLLED

Forged

Annealed

Rolled

Annealed

RoughTurnedForgingQualitySmoothTurned

CenterlessGroundCG &Polish

125 RMSHot

FinishedTolerances100 RMS

50 RMS

50 ≤ 38mm 70 > 38mm

32 RMS

ColdFinished

Tolerances

Rough Grind

As Turned

Burnish

Polish

CG Belt

Cold Drawn RMS N/A

STAINLESS COLD FINISHED ROUNDSIndustry Standards > 18 mm HTS 7222.20.00.62, .64, .67, & .69 Not Further Worked Than Cold Formed/Finished

Straighten& Cut

Belt Finish CGE 50 RMS

Billet +

Rod Coil Rolling+ Anneal or

AnnealPickle

Straighten& Cut

ColdDrawn

CenterlessGround

RMS N/A

50 RMS

32 RMS

Burnish

CG & Polish

Burnish & Polish Cold Drawn RMS N/A

COIL TO COLD FINISHED BARIndustry Standards < 18 mm

HTS 7222.20.00.41 & .43Not Further Worked Than Cold Formed/Finished

STAINLESS FAMILY

Class 1 - MartensiticClass 2 - FerriticClass 3 - AusteniticClass 4 - PH (Precipitation Hardened)Class 5 - Duplex

STAINLESS STEEL CLASSES

CLASS 1 MARTENSITIC • Chromium With Carbon Generally > .08%• Heat Treatable For Hardness/Strength• Tempered to Improve Ductility• Minimum Corrosion Resistance• Magnetic• Part of 400 Series Grades

CLASS 1 MARTENSITIC

43116Cr 2Ni

CORROSIONRESISTANCE

422Ni Mo W V

HIGH TEMPERATURESTRENGTH &

TOUGHNESS

440C17Cr 1.0C

WEARRESISTANCE

420 13Cr .35C

HARDNESS/STRENGTH

420F.35 Sul

MACHINABILITY

RIFLE BARREL QUALITY416R

.10-.20Sul

410S.08 Max C

41012Cr .15 Max C

TOUGHNESS

Family/Applications STAINLESS STEEL PRODUCTS • … · 2019-09-03 · SSINA Technical Training...

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